/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=NARROWEST --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/Problem12_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:23:30,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:23:30,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:23:30,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:23:30,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:23:30,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:23:30,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:23:30,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:23:30,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:23:30,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:23:30,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:23:30,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:23:30,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:23:30,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:23:30,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:23:30,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:23:30,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:23:30,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:23:30,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:23:30,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:23:30,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:23:30,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:23:30,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:23:30,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:23:30,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:23:30,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:23:30,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:23:30,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:23:30,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:23:30,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:23:30,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:23:30,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:23:30,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:23:30,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:23:30,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:23:30,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:23:30,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:23:30,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:23:30,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:23:30,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:23:30,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:23:30,581 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 [2020-10-13 08:23:30,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:23:30,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:23:30,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:23:30,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:23:30,608 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:23:30,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:23:30,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:23:30,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:23:30,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:23:30,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:23:30,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:23:30,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:23:30,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:23:30,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:23:30,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:23:30,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:23:30,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:23:30,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:23:30,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:23:30,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:23:30,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:23:30,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:23:30,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:23:30,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:23:30,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:23:30,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:23:30,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:23:30,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:23:30,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:23:30,613 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:23:30,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:23:30,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:23:31,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:23:31,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:23:31,007 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:23:31,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-13 08:23:31,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a74d0586/69af48a12a6c4592bd365253d619f47d/FLAG2f0869088 [2020-10-13 08:23:31,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:23:31,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-13 08:23:31,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a74d0586/69af48a12a6c4592bd365253d619f47d/FLAG2f0869088 [2020-10-13 08:23:31,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a74d0586/69af48a12a6c4592bd365253d619f47d [2020-10-13 08:23:31,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:23:31,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:23:31,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:23:31,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:23:31,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:23:31,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:23:31" (1/1) ... [2020-10-13 08:23:31,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:31, skipping insertion in model container [2020-10-13 08:23:31,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:23:31" (1/1) ... [2020-10-13 08:23:31,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:23:32,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:23:33,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:23:33,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:23:34,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:23:34,505 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:23:34,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34 WrapperNode [2020-10-13 08:23:34,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:23:34,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:23:34,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:23:34,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:23:34,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (1/1) ... [2020-10-13 08:23:34,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:23:34,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:23:34,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:23:34,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:23:34,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (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 [2020-10-13 08:23:34,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:23:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:23:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:23:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:23:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:23:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:23:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:23:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:23:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:23:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:23:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:23:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:23:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:23:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:23:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:23:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:23:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:23:39,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:23:39,449 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:23:39,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:23:39 BoogieIcfgContainer [2020-10-13 08:23:39,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:23:39,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:23:39,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:23:39,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:23:39,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:23:31" (1/3) ... [2020-10-13 08:23:39,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:23:39, skipping insertion in model container [2020-10-13 08:23:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:23:34" (2/3) ... [2020-10-13 08:23:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:23:39, skipping insertion in model container [2020-10-13 08:23:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:23:39" (3/3) ... [2020-10-13 08:23:39,477 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2020-10-13 08:23:39,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:23:39,497 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:23:39,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:23:39,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:23:39,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:23:39,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:23:39,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:23:39,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:23:39,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:23:39,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:23:39,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:23:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:23:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 08:23:39,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:39,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:39,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -602243931, now seen corresponding path program 1 times [2020-10-13 08:23:39,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:39,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:23:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:23:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-13 08:23:40,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:23:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:23:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:23:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:23:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:40,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:40,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:23:40,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:23:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:40,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:23:40,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:23:40,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:23:40,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172998426] [2020-10-13 08:23:40,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:23:40,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:23:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:23:40,613 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:23:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:49,476 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-13 08:23:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:49,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 08:23:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:49,522 INFO L225 Difference]: With dead ends: 2487 [2020-10-13 08:23:49,522 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:23:49,535 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 [2020-10-13 08:23:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:23:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-13 08:23:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-13 08:23:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-13 08:23:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 58 [2020-10-13 08:23:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:49,731 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-13 08:23:49,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:23:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-13 08:23:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:23:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:49,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:49,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:23:49,739 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:49,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:49,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1897209019, now seen corresponding path program 1 times [2020-10-13 08:23:49,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:49,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62014744] [2020-10-13 08:23:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:23:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-13 08:23:51,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:23:51,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:23:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:51,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:51,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:51,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:51,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:23:51,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:51,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:23:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:23:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:51,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62014744] [2020-10-13 08:23:51,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:51,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:51,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058013652] [2020-10-13 08:23:51,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:51,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:51,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:51,308 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 5 states. [2020-10-13 08:24:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:04,209 INFO L93 Difference]: Finished difference Result 4686 states and 7520 transitions. [2020-10-13 08:24:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:04,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:24:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:04,231 INFO L225 Difference]: With dead ends: 4686 [2020-10-13 08:24:04,231 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:24:04,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:24:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3120. [2020-10-13 08:24:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-13 08:24:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4527 transitions. [2020-10-13 08:24:04,352 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4527 transitions. Word has length 137 [2020-10-13 08:24:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:04,357 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 4527 transitions. [2020-10-13 08:24:04,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4527 transitions. [2020-10-13 08:24:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 08:24:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:04,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:04,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:24:04,372 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:04,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:04,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1716530507, now seen corresponding path program 1 times [2020-10-13 08:24:04,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:04,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731802992] [2020-10-13 08:24:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:04,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:24:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:24:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1372 [2020-10-13 08:24:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:24:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:24:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:05,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:05,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:24:05,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:24:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:24:06,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:24:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:06,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731802992] [2020-10-13 08:24:06,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:06,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:06,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411962954] [2020-10-13 08:24:06,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:06,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:06,136 INFO L87 Difference]: Start difference. First operand 3120 states and 4527 transitions. Second operand 5 states. [2020-10-13 08:24:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:18,119 INFO L93 Difference]: Finished difference Result 9351 states and 13757 transitions. [2020-10-13 08:24:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:18,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 08:24:18,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:18,154 INFO L225 Difference]: With dead ends: 9351 [2020-10-13 08:24:18,154 INFO L226 Difference]: Without dead ends: 6237 [2020-10-13 08:24:18,161 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 [2020-10-13 08:24:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-13 08:24:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6229. [2020-10-13 08:24:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-10-13 08:24:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 8207 transitions. [2020-10-13 08:24:18,388 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 8207 transitions. Word has length 145 [2020-10-13 08:24:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:18,390 INFO L479 AbstractCegarLoop]: Abstraction has 6229 states and 8207 transitions. [2020-10-13 08:24:18,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 8207 transitions. [2020-10-13 08:24:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 08:24:18,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:18,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:18,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:24:18,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1532790504, now seen corresponding path program 1 times [2020-10-13 08:24:18,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:18,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411605991] [2020-10-13 08:24:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:19,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:24:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-10-13 08:24:19,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:24:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:24:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:24:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:24:19,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:24:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:24:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:19,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411605991] [2020-10-13 08:24:19,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:19,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:24:19,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341854797] [2020-10-13 08:24:19,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:24:19,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:19,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:24:19,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:19,757 INFO L87 Difference]: Start difference. First operand 6229 states and 8207 transitions. Second operand 6 states. [2020-10-13 08:24:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:35,476 INFO L93 Difference]: Finished difference Result 15562 states and 21239 transitions. [2020-10-13 08:24:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:24:35,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-13 08:24:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:35,522 INFO L225 Difference]: With dead ends: 15562 [2020-10-13 08:24:35,522 INFO L226 Difference]: Without dead ends: 9339 [2020-10-13 08:24:35,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:24:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9339 states. [2020-10-13 08:24:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9339 to 9335. [2020-10-13 08:24:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9335 states. [2020-10-13 08:24:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 12036 transitions. [2020-10-13 08:24:35,742 INFO L78 Accepts]: Start accepts. Automaton has 9335 states and 12036 transitions. Word has length 146 [2020-10-13 08:24:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:35,742 INFO L479 AbstractCegarLoop]: Abstraction has 9335 states and 12036 transitions. [2020-10-13 08:24:35,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:24:35,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9335 states and 12036 transitions. [2020-10-13 08:24:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 08:24:35,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:35,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:35,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:24:35,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 912367676, now seen corresponding path program 1 times [2020-10-13 08:24:35,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:35,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164112089] [2020-10-13 08:24:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:40,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 08:24:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:24:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-10-13 08:24:40,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 08:24:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:24:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:40,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:24:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:40,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:40,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:24:40,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:24:40,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:24:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:40,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:40,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:24:40,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:24:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:24:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:24:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 08:24:40,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164112089] [2020-10-13 08:24:40,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:40,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:40,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823129325] [2020-10-13 08:24:40,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:40,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:40,748 INFO L87 Difference]: Start difference. First operand 9335 states and 12036 transitions. Second operand 5 states. [2020-10-13 08:24:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:50,091 INFO L93 Difference]: Finished difference Result 18756 states and 24244 transitions. [2020-10-13 08:24:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:50,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-13 08:24:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:50,135 INFO L225 Difference]: With dead ends: 18756 [2020-10-13 08:24:50,135 INFO L226 Difference]: Without dead ends: 9339 [2020-10-13 08:24:50,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9339 states. [2020-10-13 08:24:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9339 to 9335. [2020-10-13 08:24:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9335 states. [2020-10-13 08:24:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 11838 transitions. [2020-10-13 08:24:50,347 INFO L78 Accepts]: Start accepts. Automaton has 9335 states and 11838 transitions. Word has length 207 [2020-10-13 08:24:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:50,348 INFO L479 AbstractCegarLoop]: Abstraction has 9335 states and 11838 transitions. [2020-10-13 08:24:50,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 9335 states and 11838 transitions. [2020-10-13 08:24:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 08:24:50,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:50,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:50,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:24:50,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:50,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1979928416, now seen corresponding path program 1 times [2020-10-13 08:24:50,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:50,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703872849] [2020-10-13 08:24:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:51,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:24:51,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-13 08:24:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:24:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:24:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:24:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:24:52,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:24:52,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:24:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:52,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703872849] [2020-10-13 08:24:52,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:52,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:52,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777730316] [2020-10-13 08:24:52,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:52,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:52,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:52,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:52,330 INFO L87 Difference]: Start difference. First operand 9335 states and 11838 transitions. Second operand 5 states. [2020-10-13 08:25:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:05,780 INFO L93 Difference]: Finished difference Result 24869 states and 32516 transitions. [2020-10-13 08:25:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:05,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-13 08:25:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:05,833 INFO L225 Difference]: With dead ends: 24869 [2020-10-13 08:25:05,833 INFO L226 Difference]: Without dead ends: 15540 [2020-10-13 08:25:05,853 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 [2020-10-13 08:25:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15540 states. [2020-10-13 08:25:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15540 to 15532. [2020-10-13 08:25:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15532 states. [2020-10-13 08:25:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15532 states to 15532 states and 19031 transitions. [2020-10-13 08:25:06,156 INFO L78 Accepts]: Start accepts. Automaton has 15532 states and 19031 transitions. Word has length 206 [2020-10-13 08:25:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:06,157 INFO L479 AbstractCegarLoop]: Abstraction has 15532 states and 19031 transitions. [2020-10-13 08:25:06,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 15532 states and 19031 transitions. [2020-10-13 08:25:06,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 08:25:06,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:06,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:25:06,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:25:06,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1116498223, now seen corresponding path program 1 times [2020-10-13 08:25:06,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:06,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705751389] [2020-10-13 08:25:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 08:25:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:25:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4492 [2020-10-13 08:25:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 08:25:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:25:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:25:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:10,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:10,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:25:10,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:25:10,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:10,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:25:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:25:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:11,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:11,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:25:11,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:25:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:11,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:25:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:25:11,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705751389] [2020-10-13 08:25:11,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:11,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:25:11,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761822020] [2020-10-13 08:25:11,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:25:11,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:25:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:11,181 INFO L87 Difference]: Start difference. First operand 15532 states and 19031 transitions. Second operand 6 states. [2020-10-13 08:25:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:30,656 INFO L93 Difference]: Finished difference Result 49648 states and 63372 transitions. [2020-10-13 08:25:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:25:30,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-13 08:25:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:30,787 INFO L225 Difference]: With dead ends: 49648 [2020-10-13 08:25:30,787 INFO L226 Difference]: Without dead ends: 34122 [2020-10-13 08:25:30,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:25:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34122 states. [2020-10-13 08:25:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34122 to 31050. [2020-10-13 08:25:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31050 states. [2020-10-13 08:25:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31050 states to 31050 states and 37890 transitions. [2020-10-13 08:25:31,465 INFO L78 Accepts]: Start accepts. Automaton has 31050 states and 37890 transitions. Word has length 242 [2020-10-13 08:25:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:31,466 INFO L479 AbstractCegarLoop]: Abstraction has 31050 states and 37890 transitions. [2020-10-13 08:25:31,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:25:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 31050 states and 37890 transitions. [2020-10-13 08:25:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 08:25:31,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:31,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:25:31,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:25:31,487 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -467334054, now seen corresponding path program 1 times [2020-10-13 08:25:31,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:31,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94834730] [2020-10-13 08:25:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:36,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 08:25:36,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:25:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 08:25:36,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 287 [2020-10-13 08:25:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:25:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:36,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:25:36,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:36,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:36,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:25:36,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:25:36,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 08:25:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:37,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:37,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:25:37,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:25:37,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:25:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 08:25:37,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94834730] [2020-10-13 08:25:37,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:37,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:37,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681290410] [2020-10-13 08:25:37,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:37,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:37,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:37,241 INFO L87 Difference]: Start difference. First operand 31050 states and 37890 transitions. Second operand 5 states. [2020-10-13 08:25:46,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:46,987 INFO L93 Difference]: Finished difference Result 61342 states and 74934 transitions. [2020-10-13 08:25:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:46,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-13 08:25:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:47,119 INFO L225 Difference]: With dead ends: 61342 [2020-10-13 08:25:47,121 INFO L226 Difference]: Without dead ends: 31054 [2020-10-13 08:25:47,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2020-10-13 08:25:47,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 31050. [2020-10-13 08:25:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31050 states. [2020-10-13 08:25:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31050 states to 31050 states and 37886 transitions. [2020-10-13 08:25:47,801 INFO L78 Accepts]: Start accepts. Automaton has 31050 states and 37886 transitions. Word has length 333 [2020-10-13 08:25:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:47,803 INFO L479 AbstractCegarLoop]: Abstraction has 31050 states and 37886 transitions. [2020-10-13 08:25:47,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 31050 states and 37886 transitions. [2020-10-13 08:25:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-13 08:25:48,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:48,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:48,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:25:48,010 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:48,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:48,011 INFO L82 PathProgramCache]: Analyzing trace with hash -406179281, now seen corresponding path program 1 times [2020-10-13 08:25:48,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:48,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959605208] [2020-10-13 08:25:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:48,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:53,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:53,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-13 08:25:53,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:25:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 08:25:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:25:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:53,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:25:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:53,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:53,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:25:53,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:25:53,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:25:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:25:53,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:25:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:53,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-13 08:25:53,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-13 08:25:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:53,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-13 08:25:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:25:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:54,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:25:54,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:25:54,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:25:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 102 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:25:54,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959605208] [2020-10-13 08:25:54,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:54,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:25:54,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80793288] [2020-10-13 08:25:54,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:25:54,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:54,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:25:54,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:25:54,372 INFO L87 Difference]: Start difference. First operand 31050 states and 37886 transitions. Second operand 7 states. [2020-10-13 08:26:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:15,257 INFO L93 Difference]: Finished difference Result 77090 states and 95929 transitions. [2020-10-13 08:26:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:26:15,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-13 08:26:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:15,459 INFO L225 Difference]: With dead ends: 77090 [2020-10-13 08:26:15,460 INFO L226 Difference]: Without dead ends: 43707 [2020-10-13 08:26:15,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:26:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43707 states. [2020-10-13 08:26:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43707 to 41398. [2020-10-13 08:26:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41398 states. [2020-10-13 08:26:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41398 states to 41398 states and 50522 transitions. [2020-10-13 08:26:16,554 INFO L78 Accepts]: Start accepts. Automaton has 41398 states and 50522 transitions. Word has length 558 [2020-10-13 08:26:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:16,555 INFO L479 AbstractCegarLoop]: Abstraction has 41398 states and 50522 transitions. [2020-10-13 08:26:16,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:26:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 41398 states and 50522 transitions. [2020-10-13 08:26:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-13 08:26:16,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:16,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:16,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:26:16,594 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2110823999, now seen corresponding path program 1 times [2020-10-13 08:26:16,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:16,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979471388] [2020-10-13 08:26:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-13 08:26:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:26:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 08:26:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 516 [2020-10-13 08:26:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:26:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:21,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:21,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:21,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:21,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:26:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:21,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:22,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 08:26:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:26:22,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-13 08:26:22,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 354 [2020-10-13 08:26:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:26:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:26:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 08:26:22,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979471388] [2020-10-13 08:26:22,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:22,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:22,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311963328] [2020-10-13 08:26:22,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:22,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:22,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:22,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:22,959 INFO L87 Difference]: Start difference. First operand 41398 states and 50522 transitions. Second operand 5 states. [2020-10-13 08:26:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:38,235 INFO L93 Difference]: Finished difference Result 79778 states and 97286 transitions. [2020-10-13 08:26:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:38,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 563 [2020-10-13 08:26:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:38,370 INFO L225 Difference]: With dead ends: 79778 [2020-10-13 08:26:38,370 INFO L226 Difference]: Without dead ends: 39081 [2020-10-13 08:26:38,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39081 states. [2020-10-13 08:26:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39081 to 39075. [2020-10-13 08:26:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39075 states. [2020-10-13 08:26:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39075 states to 39075 states and 47287 transitions. [2020-10-13 08:26:39,082 INFO L78 Accepts]: Start accepts. Automaton has 39075 states and 47287 transitions. Word has length 563 [2020-10-13 08:26:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:39,083 INFO L479 AbstractCegarLoop]: Abstraction has 39075 states and 47287 transitions. [2020-10-13 08:26:39,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 39075 states and 47287 transitions. [2020-10-13 08:26:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-13 08:26:39,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:39,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:39,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:26:39,125 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -200244956, now seen corresponding path program 1 times [2020-10-13 08:26:39,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:39,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676309145] [2020-10-13 08:26:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-13 08:26:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:26:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-13 08:26:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 540 [2020-10-13 08:26:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:26:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:44,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:44,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:44,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 08:26:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:45,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:45,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-13 08:26:45,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-13 08:26:45,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 415 [2020-10-13 08:26:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:26:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:45,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:26:45,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:26:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 08:26:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 08:26:45,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676309145] [2020-10-13 08:26:45,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:45,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:45,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147580953] [2020-10-13 08:26:45,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:45,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:45,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:45,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:45,493 INFO L87 Difference]: Start difference. First operand 39075 states and 47287 transitions. Second operand 5 states. [2020-10-13 08:26:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:56,547 INFO L93 Difference]: Finished difference Result 67326 states and 82147 transitions. [2020-10-13 08:26:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:56,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 587 [2020-10-13 08:26:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:56,618 INFO L225 Difference]: With dead ends: 67326 [2020-10-13 08:26:56,619 INFO L226 Difference]: Without dead ends: 39079 [2020-10-13 08:26:56,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39079 states. [2020-10-13 08:26:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39079 to 39075. [2020-10-13 08:26:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39075 states. [2020-10-13 08:26:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39075 states to 39075 states and 47265 transitions. [2020-10-13 08:26:57,163 INFO L78 Accepts]: Start accepts. Automaton has 39075 states and 47265 transitions. Word has length 587 [2020-10-13 08:26:57,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:57,164 INFO L479 AbstractCegarLoop]: Abstraction has 39075 states and 47265 transitions. [2020-10-13 08:26:57,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 39075 states and 47265 transitions. [2020-10-13 08:26:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2020-10-13 08:26:57,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:57,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:57,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:26:57,199 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1188209474, now seen corresponding path program 1 times [2020-10-13 08:26:57,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:57,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982931593] [2020-10-13 08:26:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:02,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 783 [2020-10-13 08:27:02,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:27:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 08:27:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 719 [2020-10-13 08:27:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:27:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:02,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:02,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:02,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:02,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:02,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:02,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:02,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:02,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:27:02,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:27:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 08:27:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 550 [2020-10-13 08:27:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:27:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:04,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:04,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 08:27:04,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 08:27:04,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-13 08:27:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:27:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:04,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:04,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 08:27:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:27:04,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:27:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-13 08:27:05,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982931593] [2020-10-13 08:27:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975864146] [2020-10-13 08:27:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:05,008 INFO L87 Difference]: Start difference. First operand 39075 states and 47265 transitions. Second operand 5 states.