/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/Problem13_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:28:18,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:28:18,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:28:18,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:28:18,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:28:18,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:28:18,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:28:18,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:28:18,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:28:18,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:28:18,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:28:18,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:28:18,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:28:18,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:28:18,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:28:18,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:28:18,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:28:18,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:28:18,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:28:18,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:28:18,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:28:18,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:28:18,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:28:18,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:28:18,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:28:18,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:28:18,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:28:18,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:28:18,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:28:18,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:28:18,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:28:18,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:28:18,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:28:18,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:28:18,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:28:18,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:28:18,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:28:18,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:28:18,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:28:18,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:28:18,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:28:18,815 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 21:28:18,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:28:18,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:28:18,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:28:18,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:28:18,858 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:28:18,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:28:18,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:28:18,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:28:18,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:28:18,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:28:18,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:28:18,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:28:18,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:28:18,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:28:18,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:28:18,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:28:18,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:28:18,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:28:18,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:28:18,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:28:18,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:28:18,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:28:18,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:28:18,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:28:18,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:28:18,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:28:18,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:28:18,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:28:18,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:28:18,868 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 21:28:19,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:28:19,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:28:19,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:28:19,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:28:19,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:28:19,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label24.c [2020-10-14 21:28:19,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7e6c9df/099c394ddaf2446fb4b0b5e46de530f8/FLAGa3faf5d98 [2020-10-14 21:28:20,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:28:20,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label24.c [2020-10-14 21:28:20,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7e6c9df/099c394ddaf2446fb4b0b5e46de530f8/FLAGa3faf5d98 [2020-10-14 21:28:20,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7e6c9df/099c394ddaf2446fb4b0b5e46de530f8 [2020-10-14 21:28:20,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:28:20,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:28:20,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:28:20,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:28:20,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:28:20,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:20" (1/1) ... [2020-10-14 21:28:20,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:20, skipping insertion in model container [2020-10-14 21:28:20,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:28:20" (1/1) ... [2020-10-14 21:28:20,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:28:21,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:28:23,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:28:23,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:28:24,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:28:24,140 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:28:24,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24 WrapperNode [2020-10-14 21:28:24,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:28:24,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:28:24,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:28:24,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:28:24,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (1/1) ... [2020-10-14 21:28:24,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:28:24,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:28:24,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:28:24,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:28:24,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (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 21:28:24,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:28:24,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:28:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:28:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:28:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:28:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:28:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:28:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:28:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:28:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:28:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:28:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:28:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:28:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:28:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:28:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:28:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:28:37,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:28:37,120 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:28:37,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:28:37 BoogieIcfgContainer [2020-10-14 21:28:37,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:28:37,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:28:37,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:28:37,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:28:37,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:28:20" (1/3) ... [2020-10-14 21:28:37,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d4aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:28:37, skipping insertion in model container [2020-10-14 21:28:37,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:28:24" (2/3) ... [2020-10-14 21:28:37,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d4aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:28:37, skipping insertion in model container [2020-10-14 21:28:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:28:37" (3/3) ... [2020-10-14 21:28:37,154 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2020-10-14 21:28:37,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:28:37,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:28:37,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:28:37,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:28:37,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:28:37,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:28:37,244 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:28:37,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:28:37,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:28:37,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:28:37,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:28:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:28:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 21:28:37,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:37,303 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] [2020-10-14 21:28:37,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1730223288, now seen corresponding path program 1 times [2020-10-14 21:28:37,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:37,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263130795] [2020-10-14 21:28:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 21:28:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-14 21:28:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:38,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 21:28:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:28:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:38,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:28:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:38,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:38,363 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 21:28:38,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263130795] [2020-10-14 21:28:38,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:28:38,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:28:38,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211576811] [2020-10-14 21:28:38,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:28:38,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:38,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:28:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:28:38,405 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:28:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:56,246 INFO L93 Difference]: Finished difference Result 3107 states and 5729 transitions. [2020-10-14 21:28:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:28:56,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-14 21:28:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:56,291 INFO L225 Difference]: With dead ends: 3107 [2020-10-14 21:28:56,291 INFO L226 Difference]: Without dead ends: 1903 [2020-10-14 21:28:56,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:28:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-14 21:28:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1883. [2020-10-14 21:28:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-14 21:28:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2890 transitions. [2020-10-14 21:28:56,513 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2890 transitions. Word has length 35 [2020-10-14 21:28:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:56,515 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2890 transitions. [2020-10-14 21:28:56,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:28:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2890 transitions. [2020-10-14 21:28:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 21:28:56,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:56,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:56,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:28:56,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 386487745, now seen corresponding path program 1 times [2020-10-14 21:28:56,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:56,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91145760] [2020-10-14 21:28:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:58,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:28:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:28:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2010 [2020-10-14 21:28:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:28:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:28:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:58,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:58,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:28:58,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:58,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:58,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:58,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:58,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:28:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 21:28:58,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:58,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:28:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:28:59,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91145760] [2020-10-14 21:28:59,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:28:59,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:28:59,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371018197] [2020-10-14 21:28:59,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:28:59,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:28:59,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:59,052 INFO L87 Difference]: Start difference. First operand 1883 states and 2890 transitions. Second operand 7 states. [2020-10-14 21:29:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:22,596 INFO L93 Difference]: Finished difference Result 5521 states and 8492 transitions. [2020-10-14 21:29:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:29:22,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 21:29:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:22,627 INFO L225 Difference]: With dead ends: 5521 [2020-10-14 21:29:22,627 INFO L226 Difference]: Without dead ends: 3644 [2020-10-14 21:29:22,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:29:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-14 21:29:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3585. [2020-10-14 21:29:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3585 states. [2020-10-14 21:29:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4918 transitions. [2020-10-14 21:29:22,793 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4918 transitions. Word has length 104 [2020-10-14 21:29:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:22,794 INFO L479 AbstractCegarLoop]: Abstraction has 3585 states and 4918 transitions. [2020-10-14 21:29:22,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4918 transitions. [2020-10-14 21:29:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 21:29:22,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:22,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:22,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:29:22,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash -492058863, now seen corresponding path program 1 times [2020-10-14 21:29:22,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:22,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846490969] [2020-10-14 21:29:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:23,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:23,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:29:23,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-14 21:29:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:23,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:29:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:29:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:24,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:24,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:24,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:24,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:29:24,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:24,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:29:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 21:29:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:24,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:29:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:24,596 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-10-14 21:29:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:29:24,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846490969] [2020-10-14 21:29:24,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:24,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:29:24,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271046618] [2020-10-14 21:29:24,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:29:24,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:24,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:29:24,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:29:24,678 INFO L87 Difference]: Start difference. First operand 3585 states and 4918 transitions. Second operand 6 states. [2020-10-14 21:29:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:47,728 INFO L93 Difference]: Finished difference Result 10553 states and 14626 transitions. [2020-10-14 21:29:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 21:29:47,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-14 21:29:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:47,780 INFO L225 Difference]: With dead ends: 10553 [2020-10-14 21:29:47,780 INFO L226 Difference]: Without dead ends: 6974 [2020-10-14 21:29:47,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2020-10-14 21:29:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6948. [2020-10-14 21:29:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6948 states. [2020-10-14 21:29:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 8692 transitions. [2020-10-14 21:29:48,037 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 8692 transitions. Word has length 112 [2020-10-14 21:29:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:48,038 INFO L479 AbstractCegarLoop]: Abstraction has 6948 states and 8692 transitions. [2020-10-14 21:29:48,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:29:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 8692 transitions. [2020-10-14 21:29:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 21:29:48,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:48,043 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:29:48,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:29:48,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1917060872, now seen corresponding path program 1 times [2020-10-14 21:29:48,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:48,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220268334] [2020-10-14 21:29:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:53,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 21:29:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 21:29:53,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:53,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:29:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:29:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:29:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:53,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:29:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:29:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:53,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:53,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:29:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:53,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:29:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:53,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:29:53,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:53,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 21:29:53,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:53,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:53,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:29:53,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 21:29:53,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220268334] [2020-10-14 21:29:53,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:53,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:29:53,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171671003] [2020-10-14 21:29:53,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:29:53,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:29:53,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:29:53,786 INFO L87 Difference]: Start difference. First operand 6948 states and 8692 transitions. Second operand 6 states. [2020-10-14 21:30:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:23,241 INFO L93 Difference]: Finished difference Result 19755 states and 26539 transitions. [2020-10-14 21:30:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:30:23,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 205 [2020-10-14 21:30:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:23,319 INFO L225 Difference]: With dead ends: 19755 [2020-10-14 21:30:23,320 INFO L226 Difference]: Without dead ends: 13616 [2020-10-14 21:30:23,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:30:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2020-10-14 21:30:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 13595. [2020-10-14 21:30:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13595 states. [2020-10-14 21:30:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13595 states to 13595 states and 17040 transitions. [2020-10-14 21:30:23,753 INFO L78 Accepts]: Start accepts. Automaton has 13595 states and 17040 transitions. Word has length 205 [2020-10-14 21:30:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:23,755 INFO L479 AbstractCegarLoop]: Abstraction has 13595 states and 17040 transitions. [2020-10-14 21:30:23,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:30:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13595 states and 17040 transitions. [2020-10-14 21:30:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 21:30:23,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:23,763 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:30:23,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:30:23,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash 361468478, now seen corresponding path program 1 times [2020-10-14 21:30:23,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:23,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392558875] [2020-10-14 21:30:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 21:30:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-14 21:30:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:30:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:30:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:30:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:30:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:25,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:30:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:30:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:30:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:30:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:30:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:25,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:30:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:30:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:30:26,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:30:26,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:26,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:30:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:30:26,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392558875] [2020-10-14 21:30:26,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:30:26,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:30:26,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843020868] [2020-10-14 21:30:26,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:26,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:26,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:26,455 INFO L87 Difference]: Start difference. First operand 13595 states and 17040 transitions. Second operand 7 states. [2020-10-14 21:30:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:56,250 INFO L93 Difference]: Finished difference Result 27944 states and 37735 transitions. [2020-10-14 21:30:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:30:56,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-14 21:30:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:56,328 INFO L225 Difference]: With dead ends: 27944 [2020-10-14 21:30:56,329 INFO L226 Difference]: Without dead ends: 20052 [2020-10-14 21:30:56,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:30:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20052 states. [2020-10-14 21:30:56,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20052 to 19070. [2020-10-14 21:30:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19070 states. [2020-10-14 21:30:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19070 states to 19070 states and 23640 transitions. [2020-10-14 21:30:56,799 INFO L78 Accepts]: Start accepts. Automaton has 19070 states and 23640 transitions. Word has length 254 [2020-10-14 21:30:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:56,800 INFO L479 AbstractCegarLoop]: Abstraction has 19070 states and 23640 transitions. [2020-10-14 21:30:56,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 19070 states and 23640 transitions. [2020-10-14 21:30:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 21:30:56,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:56,810 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 21:30:56,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:30:56,810 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -761506675, now seen corresponding path program 1 times [2020-10-14 21:30:56,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:56,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131896155] [2020-10-14 21:30:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 21:31:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 21:31:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:02,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:31:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 124 [2020-10-14 21:31:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:02,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:02,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:02,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:31:02,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:02,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:31:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:31:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:31:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:31:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:31:02,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:31:02,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:02,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 21:31:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 21:31:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:31:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:31:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:31:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 84 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:31:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131896155] [2020-10-14 21:31:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:31:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078185253] [2020-10-14 21:31:03,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:03,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:03,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:03,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:03,136 INFO L87 Difference]: Start difference. First operand 19070 states and 23640 transitions. Second operand 7 states. [2020-10-14 21:31:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:24,890 INFO L93 Difference]: Finished difference Result 37754 states and 47192 transitions. [2020-10-14 21:31:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:31:24,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 21:31:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:24,969 INFO L225 Difference]: With dead ends: 37754 [2020-10-14 21:31:24,969 INFO L226 Difference]: Without dead ends: 19493 [2020-10-14 21:31:25,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:31:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19493 states. [2020-10-14 21:31:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19493 to 19356. [2020-10-14 21:31:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19356 states. [2020-10-14 21:31:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19356 states to 19356 states and 24145 transitions. [2020-10-14 21:31:25,452 INFO L78 Accepts]: Start accepts. Automaton has 19356 states and 24145 transitions. Word has length 280 [2020-10-14 21:31:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:25,453 INFO L479 AbstractCegarLoop]: Abstraction has 19356 states and 24145 transitions. [2020-10-14 21:31:25,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19356 states and 24145 transitions. [2020-10-14 21:31:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 21:31:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:25,460 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:31:25,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:31:25,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:25,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:25,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1962616147, now seen corresponding path program 1 times [2020-10-14 21:31:25,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:25,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960579285] [2020-10-14 21:31:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:30,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 21:31:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:31:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 21:31:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:30,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:31:30,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 21:31:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:31:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:30,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:30,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:30,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:31:30,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:30,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:31,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:31,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:31:31,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:31,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 21:31:31,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:31:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:31:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:31,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:31,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:31:31,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 21:31:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:31,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:31:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:31:31,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960579285] [2020-10-14 21:31:31,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:31,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:31:31,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189944704] [2020-10-14 21:31:31,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:31,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:31,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:31,927 INFO L87 Difference]: Start difference. First operand 19356 states and 24145 transitions. Second operand 7 states. [2020-10-14 21:31:32,134 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-14 21:31:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:54,998 INFO L93 Difference]: Finished difference Result 34318 states and 43645 transitions. [2020-10-14 21:31:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:31:55,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 21:31:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:55,072 INFO L225 Difference]: With dead ends: 34318 [2020-10-14 21:31:55,072 INFO L226 Difference]: Without dead ends: 20615 [2020-10-14 21:31:55,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:31:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20615 states. [2020-10-14 21:31:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20615 to 20288. [2020-10-14 21:31:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20288 states. [2020-10-14 21:31:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20288 states to 20288 states and 25171 transitions. [2020-10-14 21:31:55,501 INFO L78 Accepts]: Start accepts. Automaton has 20288 states and 25171 transitions. Word has length 284 [2020-10-14 21:31:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:55,501 INFO L479 AbstractCegarLoop]: Abstraction has 20288 states and 25171 transitions. [2020-10-14 21:31:55,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20288 states and 25171 transitions. [2020-10-14 21:31:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 21:31:55,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:55,508 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:55,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:31:55,508 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:55,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1961945693, now seen corresponding path program 1 times [2020-10-14 21:31:55,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:55,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493236028] [2020-10-14 21:31:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:58,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 21:31:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3069 [2020-10-14 21:31:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:58,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:31:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:31:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:31:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:58,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:31:58,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:31:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:58,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:31:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:31:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:59,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:31:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 21:31:59,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:59,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:31:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-14 21:31:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:59,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:59,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:31:59,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:31:59,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:59,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:31:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:31:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:31:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:31:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 162 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:31:59,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493236028] [2020-10-14 21:31:59,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:59,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:31:59,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791352135] [2020-10-14 21:31:59,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:31:59,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:31:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:31:59,527 INFO L87 Difference]: Start difference. First operand 20288 states and 25171 transitions. Second operand 8 states.