/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:47:23,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:47:23,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:47:23,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:47:23,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:47:23,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:47:23,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:47:23,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:47:23,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:47:23,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:47:23,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:47:23,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:47:23,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:47:23,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:47:23,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:47:23,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:47:23,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:47:23,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:47:23,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:47:23,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:47:23,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:47:23,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:47:23,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:47:23,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:47:23,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:47:23,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:47:23,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:47:23,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:47:23,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:47:23,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:47:23,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:47:23,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:47:23,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:47:23,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:47:23,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:47:23,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:47:23,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:47:23,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:47:23,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:47:23,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:47:23,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:47:23,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:47:23,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:47:23,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:47:23,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:47:23,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:47:23,894 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:47:23,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:47:23,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:47:23,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:47:23,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:47:23,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:47:23,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:47:23,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:47:23,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:47:23,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:47:23,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:47:23,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:47:23,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:47:23,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:47:23,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:47:23,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:47:23,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:47:23,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:47:23,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:47:23,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:47:23,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:47:23,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:47:23,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:47:23,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:47:23,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:47:23,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:47:24,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:47:24,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:47:24,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:47:24,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:47:24,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:47:24,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label12.c [2020-10-13 06:47:24,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127395887/e0a523fa74134e8db01cd374bba82a1b/FLAG2002b673f [2020-10-13 06:47:25,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:47:25,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label12.c [2020-10-13 06:47:25,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127395887/e0a523fa74134e8db01cd374bba82a1b/FLAG2002b673f [2020-10-13 06:47:25,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127395887/e0a523fa74134e8db01cd374bba82a1b [2020-10-13 06:47:25,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:47:25,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:47:25,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:47:25,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:47:25,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:47:25,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:25" (1/1) ... [2020-10-13 06:47:25,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:25, skipping insertion in model container [2020-10-13 06:47:25,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:25" (1/1) ... [2020-10-13 06:47:25,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:47:25,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:47:28,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:47:28,619 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:47:29,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:47:29,967 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:47:29,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29 WrapperNode [2020-10-13 06:47:29,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:47:29,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:47:29,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:47:29,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:47:29,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:29,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... [2020-10-13 06:47:30,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:47:30,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:47:30,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:47:30,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:47:30,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:47:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:47:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:47:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:47:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:47:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:47:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:47:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:47:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:47:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:47:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:47:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:47:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:47:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:47:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:47:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:47:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:47:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:47:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:47:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:47:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:47:39,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:47:39,135 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:47:39,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:39 BoogieIcfgContainer [2020-10-13 06:47:39,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:47:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:47:39,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:47:39,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:47:39,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:47:25" (1/3) ... [2020-10-13 06:47:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d748aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:39, skipping insertion in model container [2020-10-13 06:47:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:29" (2/3) ... [2020-10-13 06:47:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d748aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:39, skipping insertion in model container [2020-10-13 06:47:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:39" (3/3) ... [2020-10-13 06:47:39,159 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label12.c [2020-10-13 06:47:39,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:47:39,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:47:39,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:47:39,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:47:39,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:47:39,229 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:47:39,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:47:39,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:47:39,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:47:39,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:47:39,230 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:47:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:47:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2020-10-13 06:47:39,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:47:39,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:47:39,393 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:47:39,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:47:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -557868991, now seen corresponding path program 1 times [2020-10-13 06:47:39,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:47:39,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887606459] [2020-10-13 06:47:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:47:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-13 06:47:45,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-13 06:47:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:47:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:47:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1710 [2020-10-13 06:47:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:47:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:47:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:47:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:47:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:47:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:47:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:47:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:47:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:47:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:47:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:47:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:47:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:47:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:47:49,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887606459] [2020-10-13 06:47:49,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:47:49,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 06:47:49,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326928063] [2020-10-13 06:47:49,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 06:47:49,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:47:49,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 06:47:49,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 06:47:49,267 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-13 06:48:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:06,095 INFO L93 Difference]: Finished difference Result 6310 states and 11850 transitions. [2020-10-13 06:48:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:48:06,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1694 [2020-10-13 06:48:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:06,155 INFO L225 Difference]: With dead ends: 6310 [2020-10-13 06:48:06,155 INFO L226 Difference]: Without dead ends: 4024 [2020-10-13 06:48:06,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:48:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-13 06:48:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997. [2020-10-13 06:48:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-13 06:48:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions. [2020-10-13 06:48:06,370 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1694 [2020-10-13 06:48:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:06,375 INFO L479 AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions. [2020-10-13 06:48:06,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 06:48:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions. [2020-10-13 06:48:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-13 06:48:06,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:06,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:06,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:48:06,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:06,480 INFO L82 PathProgramCache]: Analyzing trace with hash -187570634, now seen corresponding path program 1 times [2020-10-13 06:48:06,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:06,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274326454] [2020-10-13 06:48:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:11,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:11,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-13 06:48:11,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:48:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-13 06:48:11,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:48:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:48:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:48:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:48:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:48:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:48:12,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:48:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:48:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:48:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:48:12,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:48:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:48:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:48:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:48:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:48:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:48:14,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274326454] [2020-10-13 06:48:14,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:48:14,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:48:14,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65085951] [2020-10-13 06:48:14,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:48:14,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:48:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:48:14,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:48:14,006 INFO L87 Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 8 states. [2020-10-13 06:48:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:48:45,416 INFO L93 Difference]: Finished difference Result 15474 states and 25396 transitions. [2020-10-13 06:48:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:48:45,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1703 [2020-10-13 06:48:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:48:45,477 INFO L225 Difference]: With dead ends: 15474 [2020-10-13 06:48:45,478 INFO L226 Difference]: Without dead ends: 11483 [2020-10-13 06:48:45,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:48:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11483 states. [2020-10-13 06:48:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11483 to 11283. [2020-10-13 06:48:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11283 states. [2020-10-13 06:48:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 17402 transitions. [2020-10-13 06:48:45,849 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 17402 transitions. Word has length 1703 [2020-10-13 06:48:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:48:45,850 INFO L479 AbstractCegarLoop]: Abstraction has 11283 states and 17402 transitions. [2020-10-13 06:48:45,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:48:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 17402 transitions. [2020-10-13 06:48:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-13 06:48:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:48:46,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:48:46,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:48:46,019 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:48:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:48:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1376696526, now seen corresponding path program 1 times [2020-10-13 06:48:46,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:48:46,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552896917] [2020-10-13 06:48:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:48:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-13 06:48:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:48:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-13 06:48:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:48:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:48:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:48:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:51,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:51,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:48:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:48:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:48:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:48:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:48:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:48:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:48:51,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:48:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:48:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:48:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:48:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:48:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:48:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:48:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 06:48:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:48:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:48:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:48:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:48:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:48:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:48:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:48:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:48:52,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552896917] [2020-10-13 06:48:52,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:48:52,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:48:52,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390982405] [2020-10-13 06:48:52,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:48:52,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:48:52,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:48:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:48:52,998 INFO L87 Difference]: Start difference. First operand 11283 states and 17402 transitions. Second operand 7 states. [2020-10-13 06:49:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:49:15,307 INFO L93 Difference]: Finished difference Result 34062 states and 54343 transitions. [2020-10-13 06:49:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:49:15,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1717 [2020-10-13 06:49:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:49:15,419 INFO L225 Difference]: With dead ends: 34062 [2020-10-13 06:49:15,420 INFO L226 Difference]: Without dead ends: 22785 [2020-10-13 06:49:15,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:49:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22785 states. [2020-10-13 06:49:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22785 to 22584. [2020-10-13 06:49:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22584 states. [2020-10-13 06:49:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22584 states to 22584 states and 32776 transitions. [2020-10-13 06:49:16,090 INFO L78 Accepts]: Start accepts. Automaton has 22584 states and 32776 transitions. Word has length 1717 [2020-10-13 06:49:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:49:16,091 INFO L479 AbstractCegarLoop]: Abstraction has 22584 states and 32776 transitions. [2020-10-13 06:49:16,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:49:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22584 states and 32776 transitions. [2020-10-13 06:49:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2020-10-13 06:49:16,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:49:16,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:49:16,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:49:16,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:49:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:49:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1628051312, now seen corresponding path program 1 times [2020-10-13 06:49:16,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:49:16,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240811417] [2020-10-13 06:49:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:49:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:21,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:21,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1758 [2020-10-13 06:49:21,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:49:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-13 06:49:21,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:49:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:49:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 06:49:21,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:49:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:21,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:49:21,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:21,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:49:21,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:49:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:49:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:49:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:49:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:49:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:49:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:49:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 06:49:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:49:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:49:21,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:49:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:49:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:49:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:49:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:49:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:49:23,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240811417] [2020-10-13 06:49:23,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:49:23,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:49:23,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799034034] [2020-10-13 06:49:23,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:49:23,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:49:23,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:49:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:49:23,104 INFO L87 Difference]: Start difference. First operand 22584 states and 32776 transitions. Second operand 8 states. [2020-10-13 06:49:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:49:56,776 INFO L93 Difference]: Finished difference Result 89566 states and 146274 transitions. [2020-10-13 06:49:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:49:56,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1734 [2020-10-13 06:49:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:49:57,102 INFO L225 Difference]: With dead ends: 89566 [2020-10-13 06:49:57,102 INFO L226 Difference]: Without dead ends: 66988 [2020-10-13 06:49:57,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:49:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66988 states. [2020-10-13 06:50:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66988 to 66629. [2020-10-13 06:50:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66629 states. [2020-10-13 06:50:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66629 states to 66629 states and 102857 transitions. [2020-10-13 06:50:00,513 INFO L78 Accepts]: Start accepts. Automaton has 66629 states and 102857 transitions. Word has length 1734 [2020-10-13 06:50:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:50:00,514 INFO L479 AbstractCegarLoop]: Abstraction has 66629 states and 102857 transitions. [2020-10-13 06:50:00,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:50:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 66629 states and 102857 transitions. [2020-10-13 06:50:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2020-10-13 06:50:00,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:00,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:50:00,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:50:00,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:00,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:00,738 INFO L82 PathProgramCache]: Analyzing trace with hash 69538504, now seen corresponding path program 1 times [2020-10-13 06:50:00,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:00,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986298137] [2020-10-13 06:50:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:06,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 06:50:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:50:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:06,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:50:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:50:06,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:50:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:50:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:50:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:50:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:06,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:06,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:50:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 06:50:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:50:07,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986298137] [2020-10-13 06:50:07,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:50:07,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:50:07,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242989145] [2020-10-13 06:50:07,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:50:07,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:50:07,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:50:07,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:50:07,896 INFO L87 Difference]: Start difference. First operand 66629 states and 102857 transitions. Second operand 7 states. [2020-10-13 06:50:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:50:33,116 INFO L93 Difference]: Finished difference Result 196712 states and 336119 transitions. [2020-10-13 06:50:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:50:33,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1735 [2020-10-13 06:50:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:50:33,812 INFO L225 Difference]: With dead ends: 196712 [2020-10-13 06:50:33,813 INFO L226 Difference]: Without dead ends: 130089 [2020-10-13 06:50:33,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:50:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130089 states. [2020-10-13 06:50:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130089 to 129768. [2020-10-13 06:50:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129768 states. [2020-10-13 06:50:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129768 states to 129768 states and 203310 transitions. [2020-10-13 06:50:40,166 INFO L78 Accepts]: Start accepts. Automaton has 129768 states and 203310 transitions. Word has length 1735 [2020-10-13 06:50:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:50:40,167 INFO L479 AbstractCegarLoop]: Abstraction has 129768 states and 203310 transitions. [2020-10-13 06:50:40,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:50:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 129768 states and 203310 transitions. [2020-10-13 06:50:40,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1758 [2020-10-13 06:50:40,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:40,615 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:50:40,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:50:40,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash 855798471, now seen corresponding path program 1 times [2020-10-13 06:50:40,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:40,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633227207] [2020-10-13 06:50:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:45,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1783 [2020-10-13 06:50:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:50:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-13 06:50:45,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:50:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:50:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:50:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:46,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:50:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:50:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:50:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 06:50:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:50:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 06:50:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:46,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:46,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 06:50:46,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:50:46,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:50:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 06:50:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:50:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:50:48,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633227207] [2020-10-13 06:50:48,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:50:48,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:50:48,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212337451] [2020-10-13 06:50:48,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:50:48,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:50:48,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:50:48,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:50:48,206 INFO L87 Difference]: Start difference. First operand 129768 states and 203310 transitions. Second operand 7 states.