/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:25:11,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:25:11,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:25:11,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:25:11,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:25:11,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:25:11,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:25:11,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:25:11,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:25:11,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:25:11,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:25:11,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:25:11,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:25:11,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:25:11,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:25:11,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:25:11,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:25:11,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:25:11,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:25:11,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:25:11,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:25:11,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:25:11,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:25:11,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:25:11,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:25:11,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:25:11,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:25:11,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:25:11,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:25:11,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:25:11,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:25:11,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:25:11,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:25:11,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:25:11,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:25:11,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:25:11,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:25:11,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:25:11,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:25:11,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:25:11,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:25:11,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:25:11,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:25:11,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:25:11,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:25:11,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:25:11,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:25:11,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:25:11,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:25:11,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:25:11,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:25:11,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:25:11,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:25:11,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:25:11,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:25:11,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:25:11,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:25:11,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:25:11,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:25:11,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:25:11,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:25:11,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:25:11,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:25:11,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:25:11,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:25:11,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:25:11,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:25:11,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:25:11,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:25:11,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:25:11,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:25:11,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:25:11,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-14 04:25:11,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36996a218/d6d1afc561ba44be9e1f6c5370a6ad9c/FLAG4309b0c13 [2020-10-14 04:25:12,413 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:25:12,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-14 04:25:12,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36996a218/d6d1afc561ba44be9e1f6c5370a6ad9c/FLAG4309b0c13 [2020-10-14 04:25:12,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36996a218/d6d1afc561ba44be9e1f6c5370a6ad9c [2020-10-14 04:25:12,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:25:12,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:25:12,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:25:12,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:25:12,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:25:12,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:25:12" (1/1) ... [2020-10-14 04:25:12,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e2b44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:12, skipping insertion in model container [2020-10-14 04:25:12,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:25:12" (1/1) ... [2020-10-14 04:25:12,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:25:13,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:25:15,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:25:15,235 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:25:16,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:25:16,218 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:25:16,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16 WrapperNode [2020-10-14 04:25:16,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:25:16,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:25:16,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:25:16,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:25:16,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... [2020-10-14 04:25:16,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:25:16,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:25:16,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:25:16,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:25:16,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:25:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:25:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:25:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:25:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:25:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:25:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:25:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:25:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:25:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:25:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:25:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:25:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:25:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:25:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:25:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:25:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:25:28,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:25:28,996 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:25:29,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:29 BoogieIcfgContainer [2020-10-14 04:25:29,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:25:29,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:25:29,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:25:29,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:25:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:25:12" (1/3) ... [2020-10-14 04:25:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6461b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:25:29, skipping insertion in model container [2020-10-14 04:25:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:25:16" (2/3) ... [2020-10-14 04:25:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6461b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:25:29, skipping insertion in model container [2020-10-14 04:25:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:29" (3/3) ... [2020-10-14 04:25:29,024 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label03.c [2020-10-14 04:25:29,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:25:29,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:25:29,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:25:29,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:25:29,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:25:29,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:25:29,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:25:29,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:25:29,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:25:29,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:25:29,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:25:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:25:29,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 04:25:29,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:29,158 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] [2020-10-14 04:25:29,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash 52435620, now seen corresponding path program 1 times [2020-10-14 04:25:29,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:29,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050216658] [2020-10-14 04:25:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:25:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 04:25:29,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:25:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:25:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:25:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:25:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:29,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:29,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:25:29,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:29,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:25:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:25:29,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050216658] [2020-10-14 04:25:29,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:25:29,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:25:29,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197558398] [2020-10-14 04:25:29,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:25:29,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:29,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:25:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:25:29,999 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:25:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:25:53,044 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 04:25:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:25:53,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 04:25:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:25:53,102 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 04:25:53,103 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 04:25:53,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:25:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 04:25:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 04:25:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 04:25:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 04:25:53,340 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 63 [2020-10-14 04:25:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:25:53,342 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 04:25:53,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:25:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 04:25:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 04:25:53,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:53,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:25:53,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:25:53,358 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -412527432, now seen corresponding path program 1 times [2020-10-14 04:25:53,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:53,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503615714] [2020-10-14 04:25:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 04:25:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:25:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-14 04:25:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:55,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:25:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:25:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:25:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:55,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:25:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:55,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:25:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:55,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:25:55,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:25:55,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:55,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:25:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:25:55,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503615714] [2020-10-14 04:25:55,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:25:55,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:25:55,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958399213] [2020-10-14 04:25:55,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:25:55,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:25:55,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:25:55,355 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 5 states. [2020-10-14 04:26:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:31,373 INFO L93 Difference]: Finished difference Result 7887 states and 13849 transitions. [2020-10-14 04:26:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:26:31,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 04:26:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:31,399 INFO L225 Difference]: With dead ends: 7887 [2020-10-14 04:26:31,399 INFO L226 Difference]: Without dead ends: 4694 [2020-10-14 04:26:31,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:26:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-14 04:26:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4646. [2020-10-14 04:26:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4646 states. [2020-10-14 04:26:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 7460 transitions. [2020-10-14 04:26:31,525 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 7460 transitions. Word has length 135 [2020-10-14 04:26:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:31,526 INFO L479 AbstractCegarLoop]: Abstraction has 4646 states and 7460 transitions. [2020-10-14 04:26:31,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:26:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 7460 transitions. [2020-10-14 04:26:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 04:26:31,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:31,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:31,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:26:31,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:31,530 INFO L82 PathProgramCache]: Analyzing trace with hash 969542030, now seen corresponding path program 1 times [2020-10-14 04:26:31,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:31,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624021076] [2020-10-14 04:26:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:32,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 04:26:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:26:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-10-14 04:26:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:26:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:26:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:32,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:32,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:32,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:26:32,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:32,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:32,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:26:32,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 04:26:32,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:32,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:26:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:26:32,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624021076] [2020-10-14 04:26:32,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:26:32,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:26:32,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610458030] [2020-10-14 04:26:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:26:32,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:32,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:26:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:26:32,960 INFO L87 Difference]: Start difference. First operand 4646 states and 7460 transitions. Second operand 6 states. [2020-10-14 04:27:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:01,251 INFO L93 Difference]: Finished difference Result 13532 states and 22023 transitions. [2020-10-14 04:27:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:27:01,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-14 04:27:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:01,295 INFO L225 Difference]: With dead ends: 13532 [2020-10-14 04:27:01,296 INFO L226 Difference]: Without dead ends: 8892 [2020-10-14 04:27:01,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:27:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2020-10-14 04:27:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 8885. [2020-10-14 04:27:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8885 states. [2020-10-14 04:27:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 13990 transitions. [2020-10-14 04:27:01,546 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 13990 transitions. Word has length 138 [2020-10-14 04:27:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:01,547 INFO L479 AbstractCegarLoop]: Abstraction has 8885 states and 13990 transitions. [2020-10-14 04:27:01,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:27:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 13990 transitions. [2020-10-14 04:27:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 04:27:01,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:01,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:27:01,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:27:01,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2077003174, now seen corresponding path program 1 times [2020-10-14 04:27:01,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:01,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104045149] [2020-10-14 04:27:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 04:27:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 04:27:01,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:01,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:27:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:27:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:27:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:02,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:27:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:02,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:27:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:02,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:27:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 04:27:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:02,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:27:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:27:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:02,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104045149] [2020-10-14 04:27:02,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:27:02,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:27:02,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414180454] [2020-10-14 04:27:02,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:27:02,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:02,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:27:02,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:27:02,482 INFO L87 Difference]: Start difference. First operand 8885 states and 13990 transitions. Second operand 7 states. [2020-10-14 04:27:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:47,984 INFO L93 Difference]: Finished difference Result 26625 states and 42612 transitions. [2020-10-14 04:27:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:27:47,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-14 04:27:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:48,056 INFO L225 Difference]: With dead ends: 26625 [2020-10-14 04:27:48,056 INFO L226 Difference]: Without dead ends: 17746 [2020-10-14 04:27:48,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:27:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17746 states. [2020-10-14 04:27:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17746 to 17575. [2020-10-14 04:27:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17575 states. [2020-10-14 04:27:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17575 states to 17575 states and 27012 transitions. [2020-10-14 04:27:48,628 INFO L78 Accepts]: Start accepts. Automaton has 17575 states and 27012 transitions. Word has length 144 [2020-10-14 04:27:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:48,629 INFO L479 AbstractCegarLoop]: Abstraction has 17575 states and 27012 transitions. [2020-10-14 04:27:48,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:27:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 17575 states and 27012 transitions. [2020-10-14 04:27:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 04:27:48,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:48,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:27:48,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:27:48,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash 883220272, now seen corresponding path program 1 times [2020-10-14 04:27:48,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:48,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239141183] [2020-10-14 04:27:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 04:27:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:27:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-14 04:27:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:50,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:27:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:27:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:50,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:50,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:27:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:27:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:27:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:50,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239141183] [2020-10-14 04:27:50,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:27:50,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:27:50,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128503288] [2020-10-14 04:27:50,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:27:50,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:27:50,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:27:50,944 INFO L87 Difference]: Start difference. First operand 17575 states and 27012 transitions. Second operand 6 states. [2020-10-14 04:28:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:28:54,953 INFO L93 Difference]: Finished difference Result 40918 states and 64861 transitions. [2020-10-14 04:28:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:28:54,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-14 04:28:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:28:55,141 INFO L225 Difference]: With dead ends: 40918 [2020-10-14 04:28:55,142 INFO L226 Difference]: Without dead ends: 23349 [2020-10-14 04:28:55,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:28:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23349 states. [2020-10-14 04:28:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23349 to 23222. [2020-10-14 04:28:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23222 states. [2020-10-14 04:28:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23222 states to 23222 states and 36717 transitions. [2020-10-14 04:28:55,698 INFO L78 Accepts]: Start accepts. Automaton has 23222 states and 36717 transitions. Word has length 164 [2020-10-14 04:28:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:28:55,699 INFO L479 AbstractCegarLoop]: Abstraction has 23222 states and 36717 transitions. [2020-10-14 04:28:55,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:28:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 23222 states and 36717 transitions. [2020-10-14 04:28:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 04:28:55,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:28:55,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:28:55,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:28:55,704 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:28:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:28:55,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1888937816, now seen corresponding path program 1 times [2020-10-14 04:28:55,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:28:55,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67990833] [2020-10-14 04:28:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:28:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 04:28:56,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:28:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-10-14 04:28:56,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:56,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:28:56,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 04:28:56,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:28:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:28:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:57,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:57,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:28:57,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:28:57,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:57,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:28:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:28:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:57,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:28:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:57,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:57,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:28:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:28:57,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67990833] [2020-10-14 04:28:57,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:28:57,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:28:57,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91269036] [2020-10-14 04:28:57,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:28:57,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:28:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:28:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:28:57,640 INFO L87 Difference]: Start difference. First operand 23222 states and 36717 transitions. Second operand 5 states.