/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:07:49,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:07:49,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:07:49,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:07:49,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:07:49,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:07:49,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:07:49,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:07:49,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:07:49,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:07:49,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:07:49,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:07:49,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:07:49,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:07:49,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:07:49,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:07:49,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:07:49,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:07:49,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:07:49,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:07:49,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:07:49,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:07:49,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:07:49,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:07:49,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:07:49,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:07:49,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:07:49,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:07:49,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:07:49,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:07:49,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:07:49,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:07:49,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:07:49,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:07:49,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:07:49,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:07:49,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:07:49,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:07:49,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:07:49,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:07:49,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:07:49,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:07:49,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:07:49,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:07:49,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:07:49,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:07:49,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:07:49,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:07:49,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:07:49,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:07:49,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:07:49,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:07:49,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:07:49,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:07:49,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:07:49,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:07:49,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:07:49,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:07:49,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:07:49,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:07:49,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:07:49,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:07:49,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:07:49,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:49,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:07:49,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:07:49,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:07:49,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:07:49,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:07:49,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:07:49,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:07:49,778 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:07:50,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:07:50,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:07:50,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:07:50,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:07:50,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:07:50,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-14 21:07:50,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b55aa3224/08dce176a2564e21b3fe59312fe7d96c/FLAG7a941ef02 [2020-10-14 21:07:51,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:07:51,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-14 21:07:51,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b55aa3224/08dce176a2564e21b3fe59312fe7d96c/FLAG7a941ef02 [2020-10-14 21:07:51,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b55aa3224/08dce176a2564e21b3fe59312fe7d96c [2020-10-14 21:07:51,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:07:51,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:07:51,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:51,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:07:51,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:07:51,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:51" (1/1) ... [2020-10-14 21:07:51,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:51, skipping insertion in model container [2020-10-14 21:07:51,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:51" (1/1) ... [2020-10-14 21:07:51,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:07:51,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:07:53,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:53,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:07:54,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:54,122 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:07:54,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54 WrapperNode [2020-10-14 21:07:54,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:54,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:07:54,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:07:54,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:07:54,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... [2020-10-14 21:07:54,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:07:54,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:07:54,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:07:54,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:07:54,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:54,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:07:54,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:07:54,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:07:54,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:07:54,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:07:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:07:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:07:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:07:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:07:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:07:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:07:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:07:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:07:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:07:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:07:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:07:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:07:59,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:07:59,514 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:07:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:59 BoogieIcfgContainer [2020-10-14 21:07:59,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:07:59,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:07:59,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:07:59,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:07:59,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:07:51" (1/3) ... [2020-10-14 21:07:59,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d574086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:59, skipping insertion in model container [2020-10-14 21:07:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:54" (2/3) ... [2020-10-14 21:07:59,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d574086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:59, skipping insertion in model container [2020-10-14 21:07:59,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:59" (3/3) ... [2020-10-14 21:07:59,536 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2020-10-14 21:07:59,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:07:59,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:07:59,578 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:07:59,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:07:59,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:07:59,612 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:07:59,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:07:59,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:07:59,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:07:59,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:07:59,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:07:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:07:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 21:07:59,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:59,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:59,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1107355747, now seen corresponding path program 1 times [2020-10-14 21:07:59,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:59,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339054959] [2020-10-14 21:07:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:00,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:00,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 21:08:00,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-14 21:08:00,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:00,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:08:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:08:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:00,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:00,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:00,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:08:00,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:00,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:00,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339054959] [2020-10-14 21:08:00,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:00,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:08:00,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321368429] [2020-10-14 21:08:00,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:08:00,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:00,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:08:00,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:08:00,618 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:08:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:09,365 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:08:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:08:09,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 21:08:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:09,414 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:08:09,415 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:08:09,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:08:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:08:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:08:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:08:09,583 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 64 [2020-10-14 21:08:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:09,585 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:08:09,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:08:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:08:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 21:08:09,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:09,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:09,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:08:09,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:09,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1335760101, now seen corresponding path program 1 times [2020-10-14 21:08:09,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:09,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983849421] [2020-10-14 21:08:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:10,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:10,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:08:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-14 21:08:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:10,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:08:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 21:08:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:08:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:08:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:10,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:10,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 21:08:10,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:10,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:10,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:10,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983849421] [2020-10-14 21:08:10,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:10,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:08:10,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303740742] [2020-10-14 21:08:10,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:08:10,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:10,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:08:10,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:08:10,852 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 21:08:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:20,751 INFO L93 Difference]: Finished difference Result 3893 states and 6552 transitions. [2020-10-14 21:08:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:08:20,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 21:08:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:20,771 INFO L225 Difference]: With dead ends: 3893 [2020-10-14 21:08:20,772 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 21:08:20,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 21:08:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342. [2020-10-14 21:08:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2342 states. [2020-10-14 21:08:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3590 transitions. [2020-10-14 21:08:20,878 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3590 transitions. Word has length 139 [2020-10-14 21:08:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:20,884 INFO L479 AbstractCegarLoop]: Abstraction has 2342 states and 3590 transitions. [2020-10-14 21:08:20,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:08:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3590 transitions. [2020-10-14 21:08:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 21:08:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:20,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:20,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:08:20,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1291094684, now seen corresponding path program 1 times [2020-10-14 21:08:20,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:20,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977229120] [2020-10-14 21:08:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 21:08:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-14 21:08:22,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:08:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:08:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:22,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:22,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:22,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:22,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:08:22,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 21:08:22,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:22,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:08:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:08:22,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977229120] [2020-10-14 21:08:22,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:22,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:22,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934920698] [2020-10-14 21:08:22,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:22,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:22,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:22,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:22,782 INFO L87 Difference]: Start difference. First operand 2342 states and 3590 transitions. Second operand 7 states. [2020-10-14 21:08:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:34,973 INFO L93 Difference]: Finished difference Result 7149 states and 11127 transitions. [2020-10-14 21:08:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:08:34,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-14 21:08:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:35,005 INFO L225 Difference]: With dead ends: 7149 [2020-10-14 21:08:35,006 INFO L226 Difference]: Without dead ends: 4813 [2020-10-14 21:08:35,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:08:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-14 21:08:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4744. [2020-10-14 21:08:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4744 states. [2020-10-14 21:08:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 6412 transitions. [2020-10-14 21:08:35,160 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 6412 transitions. Word has length 142 [2020-10-14 21:08:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:35,161 INFO L479 AbstractCegarLoop]: Abstraction has 4744 states and 6412 transitions. [2020-10-14 21:08:35,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 6412 transitions. [2020-10-14 21:08:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 21:08:35,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:35,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:35,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:08:35,167 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash -552151827, now seen corresponding path program 1 times [2020-10-14 21:08:35,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:35,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602196583] [2020-10-14 21:08:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:36,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:36,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 21:08:36,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-14 21:08:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:08:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:36,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:36,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:08:36,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:36,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:36,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:36,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:36,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:08:36,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:08:36,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:36,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:08:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:36,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602196583] [2020-10-14 21:08:36,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:36,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:36,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239358736] [2020-10-14 21:08:36,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:36,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:36,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:36,904 INFO L87 Difference]: Start difference. First operand 4744 states and 6412 transitions. Second operand 7 states. [2020-10-14 21:08:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:51,612 INFO L93 Difference]: Finished difference Result 14692 states and 20581 transitions. [2020-10-14 21:08:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:51,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-14 21:08:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:51,676 INFO L225 Difference]: With dead ends: 14692 [2020-10-14 21:08:51,676 INFO L226 Difference]: Without dead ends: 9954 [2020-10-14 21:08:51,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-14 21:08:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9790. [2020-10-14 21:08:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9790 states. [2020-10-14 21:08:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9790 states to 9790 states and 12524 transitions. [2020-10-14 21:08:52,065 INFO L78 Accepts]: Start accepts. Automaton has 9790 states and 12524 transitions. Word has length 167 [2020-10-14 21:08:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:52,065 INFO L479 AbstractCegarLoop]: Abstraction has 9790 states and 12524 transitions. [2020-10-14 21:08:52,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9790 states and 12524 transitions. [2020-10-14 21:08:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 21:08:52,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:52,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:52,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:08:52,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:52,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1708049653, now seen corresponding path program 1 times [2020-10-14 21:08:52,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:52,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064187705] [2020-10-14 21:08:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:55,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 21:08:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3832 [2020-10-14 21:08:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:55,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 21:08:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:08:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:08:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:08:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:08:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:56,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:08:56,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:08:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 21:08:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:56,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:08:56,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:08:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:56,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:08:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:56,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064187705] [2020-10-14 21:08:56,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:56,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:08:56,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754669766] [2020-10-14 21:08:56,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:08:56,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:56,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:08:56,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:56,548 INFO L87 Difference]: Start difference. First operand 9790 states and 12524 transitions. Second operand 8 states. [2020-10-14 21:09:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:21,604 INFO L93 Difference]: Finished difference Result 29402 states and 40755 transitions. [2020-10-14 21:09:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:09:21,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-14 21:09:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:21,682 INFO L225 Difference]: With dead ends: 29402 [2020-10-14 21:09:21,682 INFO L226 Difference]: Without dead ends: 19618 [2020-10-14 21:09:21,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:09:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19618 states. [2020-10-14 21:09:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19618 to 19502. [2020-10-14 21:09:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19502 states. [2020-10-14 21:09:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19502 states to 19502 states and 25210 transitions. [2020-10-14 21:09:22,205 INFO L78 Accepts]: Start accepts. Automaton has 19502 states and 25210 transitions. Word has length 222 [2020-10-14 21:09:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:22,207 INFO L479 AbstractCegarLoop]: Abstraction has 19502 states and 25210 transitions. [2020-10-14 21:09:22,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:09:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 19502 states and 25210 transitions. [2020-10-14 21:09:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 21:09:22,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:22,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:09:22,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:09:22,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:22,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1930760988, now seen corresponding path program 1 times [2020-10-14 21:09:22,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:22,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267334963] [2020-10-14 21:09:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:22,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 21:09:24,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:09:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2312 [2020-10-14 21:09:24,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:09:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 21:09:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:24,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:09:24,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:24,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:09:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:09:24,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:24,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:09:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:09:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:24,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:09:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:09:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:25,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:09:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 21:09:25,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267334963] [2020-10-14 21:09:25,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:25,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:09:25,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575011544] [2020-10-14 21:09:25,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:25,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:25,155 INFO L87 Difference]: Start difference. First operand 19502 states and 25210 transitions. Second operand 7 states. [2020-10-14 21:09:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:42,765 INFO L93 Difference]: Finished difference Result 57798 states and 77397 transitions. [2020-10-14 21:09:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:09:42,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-14 21:09:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:42,932 INFO L225 Difference]: With dead ends: 57798 [2020-10-14 21:09:42,933 INFO L226 Difference]: Without dead ends: 34924 [2020-10-14 21:09:43,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34924 states. [2020-10-14 21:09:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34924 to 32445. [2020-10-14 21:09:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32445 states. [2020-10-14 21:09:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32445 states to 32445 states and 39920 transitions. [2020-10-14 21:09:44,000 INFO L78 Accepts]: Start accepts. Automaton has 32445 states and 39920 transitions. Word has length 225 [2020-10-14 21:09:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:44,001 INFO L479 AbstractCegarLoop]: Abstraction has 32445 states and 39920 transitions. [2020-10-14 21:09:44,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 32445 states and 39920 transitions. [2020-10-14 21:09:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 21:09:44,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:44,009 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:44,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:09:44,010 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash -626123186, now seen corresponding path program 1 times [2020-10-14 21:09:44,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:44,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83316381] [2020-10-14 21:09:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:47,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:47,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 21:09:47,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3738 [2020-10-14 21:09:47,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:47,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:09:47,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:09:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:47,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:48,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:48,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:09:48,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 21:09:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:48,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:09:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:48,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:09:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:48,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:09:48,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:09:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 114 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:09:48,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83316381] [2020-10-14 21:09:48,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:48,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:48,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038668175] [2020-10-14 21:09:48,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:48,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:48,869 INFO L87 Difference]: Start difference. First operand 32445 states and 39920 transitions. Second operand 7 states. [2020-10-14 21:10:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:03,587 INFO L93 Difference]: Finished difference Result 65933 states and 81274 transitions. [2020-10-14 21:10:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:10:03,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-14 21:10:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:03,734 INFO L225 Difference]: With dead ends: 65933 [2020-10-14 21:10:03,734 INFO L226 Difference]: Without dead ends: 33494 [2020-10-14 21:10:03,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:10:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33494 states. [2020-10-14 21:10:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33494 to 33323. [2020-10-14 21:10:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33323 states. [2020-10-14 21:10:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33323 states to 33323 states and 40945 transitions. [2020-10-14 21:10:04,521 INFO L78 Accepts]: Start accepts. Automaton has 33323 states and 40945 transitions. Word has length 285 [2020-10-14 21:10:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:04,522 INFO L479 AbstractCegarLoop]: Abstraction has 33323 states and 40945 transitions. [2020-10-14 21:10:04,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33323 states and 40945 transitions. [2020-10-14 21:10:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 21:10:04,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:04,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:04,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:10:04,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:04,531 INFO L82 PathProgramCache]: Analyzing trace with hash -863374319, now seen corresponding path program 1 times [2020-10-14 21:10:04,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:04,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135473664] [2020-10-14 21:10:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 21:10:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-14 21:10:05,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:10:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 21:10:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:10:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:10:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:05,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:10:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 21:10:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:10:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:05,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:05,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:10:05,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:10:05,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:05,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:05,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:10:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:10:06,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135473664] [2020-10-14 21:10:06,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:06,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:06,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725548540] [2020-10-14 21:10:06,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:10:06,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:06,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:10:06,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:10:06,146 INFO L87 Difference]: Start difference. First operand 33323 states and 40945 transitions. Second operand 5 states. [2020-10-14 21:10:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:22,302 INFO L93 Difference]: Finished difference Result 75221 states and 93852 transitions. [2020-10-14 21:10:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:10:22,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-14 21:10:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:22,430 INFO L225 Difference]: With dead ends: 75221 [2020-10-14 21:10:22,430 INFO L226 Difference]: Without dead ends: 42671 [2020-10-14 21:10:22,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:10:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42671 states. [2020-10-14 21:10:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42671 to 42627. [2020-10-14 21:10:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42627 states. [2020-10-14 21:10:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42627 states to 42627 states and 51768 transitions. [2020-10-14 21:10:23,294 INFO L78 Accepts]: Start accepts. Automaton has 42627 states and 51768 transitions. Word has length 312 [2020-10-14 21:10:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:23,295 INFO L479 AbstractCegarLoop]: Abstraction has 42627 states and 51768 transitions. [2020-10-14 21:10:23,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:10:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 42627 states and 51768 transitions. [2020-10-14 21:10:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 21:10:23,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:23,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:23,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:10:23,306 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:23,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1260530393, now seen corresponding path program 1 times [2020-10-14 21:10:23,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:23,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270777559] [2020-10-14 21:10:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:26,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-14 21:10:26,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2993 [2020-10-14 21:10:26,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:26,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:10:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:10:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:26,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:26,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:26,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:10:26,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:26,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:10:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:10:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:26,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:10:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:10:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:27,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 21:10:27,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:27,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:27,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:10:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:10:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:10:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:27,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:10:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 293 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:10:27,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270777559] [2020-10-14 21:10:27,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:27,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:10:27,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400387960] [2020-10-14 21:10:27,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:10:27,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:27,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:10:27,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:10:27,575 INFO L87 Difference]: Start difference. First operand 42627 states and 51768 transitions. Second operand 7 states. [2020-10-14 21:10:27,831 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-14 21:10:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:53,745 INFO L93 Difference]: Finished difference Result 106064 states and 133464 transitions. [2020-10-14 21:10:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:10:53,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-14 21:10:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:53,931 INFO L225 Difference]: With dead ends: 106064 [2020-10-14 21:10:53,931 INFO L226 Difference]: Without dead ends: 64210 [2020-10-14 21:10:53,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64210 states. [2020-10-14 21:10:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64210 to 62511. [2020-10-14 21:10:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62511 states. [2020-10-14 21:10:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62511 states to 62511 states and 77626 transitions. [2020-10-14 21:10:55,343 INFO L78 Accepts]: Start accepts. Automaton has 62511 states and 77626 transitions. Word has length 403 [2020-10-14 21:10:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:55,345 INFO L479 AbstractCegarLoop]: Abstraction has 62511 states and 77626 transitions. [2020-10-14 21:10:55,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 62511 states and 77626 transitions. [2020-10-14 21:10:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-14 21:10:55,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:55,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:55,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:10:55,373 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash -687932783, now seen corresponding path program 1 times [2020-10-14 21:10:55,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:55,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3217724] [2020-10-14 21:10:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-14 21:11:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:11:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 21:11:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:00,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:11:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:11:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:11:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:11:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:11:01,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:11:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:01,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:11:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:11:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:01,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:11:01,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 21:11:01,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:11:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:01,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:11:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:11:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:01,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:01,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:11:01,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 21:11:01,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:01,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:11:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 363 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 21:11:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3217724] [2020-10-14 21:11:01,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:01,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:11:01,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268512969] [2020-10-14 21:11:01,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:11:01,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:11:01,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:11:01,860 INFO L87 Difference]: Start difference. First operand 62511 states and 77626 transitions. Second operand 9 states.