/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/Problem12_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:44:08,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:44:08,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:44:08,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:44:08,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:44:08,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:44:08,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:44:08,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:44:08,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:44:08,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:44:08,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:44:08,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:44:08,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:44:08,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:44:08,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:44:08,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:44:08,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:44:08,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:44:08,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:44:08,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:44:08,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:44:08,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:44:08,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:44:08,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:44:08,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:44:08,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:44:08,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:44:08,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:44:08,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:44:08,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:44:08,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:44:08,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:44:08,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:44:08,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:44:08,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:44:08,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:44:08,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:44:08,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:44:08,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:44:08,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:44:08,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:44:08,839 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 02:44:08,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:44:08,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:44:08,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:44:08,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:44:08,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:44:08,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:44:08,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:44:08,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:44:08,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:44:08,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:44:08,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:44:08,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:44:08,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:44:08,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:44:08,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:44:08,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:44:08,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:44:08,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:44:08,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:44:08,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:44:08,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:44:08,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:44:08,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:44:08,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:44:08,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:44:08,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:44:08,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:44:08,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:44:08,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:44:08,891 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 02:44:09,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:44:09,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:44:09,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:44:09,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:44:09,258 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:44:09,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-14 02:44:09,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777622e40/ea1cbd70cdff4a709d42c1687266fa00/FLAGdee0eebc7 [2020-10-14 02:44:10,146 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:44:10,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label13.c [2020-10-14 02:44:10,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777622e40/ea1cbd70cdff4a709d42c1687266fa00/FLAGdee0eebc7 [2020-10-14 02:44:10,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777622e40/ea1cbd70cdff4a709d42c1687266fa00 [2020-10-14 02:44:10,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:44:10,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:44:10,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:44:10,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:44:10,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:44:10,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:44:10" (1/1) ... [2020-10-14 02:44:10,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2dfc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:10, skipping insertion in model container [2020-10-14 02:44:10,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:44:10" (1/1) ... [2020-10-14 02:44:10,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:44:10,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:44:12,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:44:12,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:44:13,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:44:13,087 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:44:13,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13 WrapperNode [2020-10-14 02:44:13,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:44:13,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:44:13,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:44:13,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:44:13,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (1/1) ... [2020-10-14 02:44:13,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:44:13,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:44:13,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:44:13,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:44:13,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (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 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:44:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:44:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:44:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:44:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:44:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:44:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:44:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:44:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:44:19,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:44:19,242 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:44:19,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:19 BoogieIcfgContainer [2020-10-14 02:44:19,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:44:19,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:44:19,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:44:19,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:44:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:44:10" (1/3) ... [2020-10-14 02:44:19,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff63fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:19, skipping insertion in model container [2020-10-14 02:44:19,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:44:13" (2/3) ... [2020-10-14 02:44:19,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff63fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:44:19, skipping insertion in model container [2020-10-14 02:44:19,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:44:19" (3/3) ... [2020-10-14 02:44:19,371 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2020-10-14 02:44:19,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:44:19,398 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:44:19,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:44:19,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:44:19,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:44:19,455 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:44:19,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:44:19,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:44:19,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:44:19,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:44:19,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:44:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:44:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 02:44:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:19,521 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] [2020-10-14 02:44:19,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:19,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:19,529 INFO L82 PathProgramCache]: Analyzing trace with hash -977354555, now seen corresponding path program 1 times [2020-10-14 02:44:19,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:19,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448396174] [2020-10-14 02:44:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 02:44:20,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-14 02:44:20,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:20,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:44:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:44:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 02:44:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:44:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 02:44:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:20,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:44:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:20,442 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 02:44:20,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448396174] [2020-10-14 02:44:20,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:44:20,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:44:20,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319539298] [2020-10-14 02:44:20,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:44:20,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:44:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:44:20,477 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:44:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:29,841 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 02:44:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:29,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 02:44:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:29,877 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:44:29,877 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:44:29,895 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 02:44:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:44:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 02:44:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 02:44:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 02:44:30,089 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 34 [2020-10-14 02:44:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:30,090 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 02:44:30,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:44:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 02:44:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 02:44:30,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:30,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:30,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:44:30,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:30,098 INFO L82 PathProgramCache]: Analyzing trace with hash 424408621, now seen corresponding path program 1 times [2020-10-14 02:44:30,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:30,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769814980] [2020-10-14 02:44:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:30,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:44:30,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 02:44:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:30,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:44:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 02:44:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:30,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:44:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:30,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:30,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:30,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:44:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:44:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:30,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:44:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:30,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769814980] [2020-10-14 02:44:30,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:30,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:44:30,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295378697] [2020-10-14 02:44:30,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:44:30,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:30,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:44:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:44:30,928 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-14 02:44:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:41,559 INFO L93 Difference]: Finished difference Result 4677 states and 7291 transitions. [2020-10-14 02:44:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:44:41,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 02:44:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:41,581 INFO L225 Difference]: With dead ends: 4677 [2020-10-14 02:44:41,581 INFO L226 Difference]: Without dead ends: 3128 [2020-10-14 02:44:41,586 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 02:44:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-14 02:44:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3117. [2020-10-14 02:44:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-14 02:44:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4311 transitions. [2020-10-14 02:44:41,691 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4311 transitions. Word has length 109 [2020-10-14 02:44:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:41,692 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4311 transitions. [2020-10-14 02:44:41,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:44:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4311 transitions. [2020-10-14 02:44:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 02:44:41,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:41,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:41,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:44:41,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1459302921, now seen corresponding path program 1 times [2020-10-14 02:44:41,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:41,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860876205] [2020-10-14 02:44:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:42,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:44:42,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:44:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-14 02:44:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:42,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 02:44:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 02:44:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:44:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:42,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:42,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:42,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:44:42,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:42,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:42,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:44:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:44:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:43,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:44:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:43,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860876205] [2020-10-14 02:44:43,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:43,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:44:43,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945652083] [2020-10-14 02:44:43,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:44:43,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:43,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:44:43,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:44:43,114 INFO L87 Difference]: Start difference. First operand 3117 states and 4311 transitions. Second operand 6 states. [2020-10-14 02:44:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:57,135 INFO L93 Difference]: Finished difference Result 7788 states and 11146 transitions. [2020-10-14 02:44:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:44:57,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-14 02:44:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:57,177 INFO L225 Difference]: With dead ends: 7788 [2020-10-14 02:44:57,178 INFO L226 Difference]: Without dead ends: 4677 [2020-10-14 02:44:57,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:44:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2020-10-14 02:44:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4673. [2020-10-14 02:44:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-14 02:44:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6300 transitions. [2020-10-14 02:44:57,361 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6300 transitions. Word has length 111 [2020-10-14 02:44:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:57,361 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6300 transitions. [2020-10-14 02:44:57,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:44:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6300 transitions. [2020-10-14 02:44:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 02:44:57,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:57,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:57,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:44:57,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1020822581, now seen corresponding path program 1 times [2020-10-14 02:44:57,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:57,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780598215] [2020-10-14 02:44:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:58,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:44:58,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:44:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-14 02:44:58,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:58,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:44:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 02:44:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:58,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:44:58,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:58,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:44:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:44:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:58,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:44:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:44:58,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780598215] [2020-10-14 02:44:58,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:58,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:44:58,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15811687] [2020-10-14 02:44:58,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:44:58,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:44:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:44:58,792 INFO L87 Difference]: Start difference. First operand 4673 states and 6300 transitions. Second operand 6 states. [2020-10-14 02:45:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:14,803 INFO L93 Difference]: Finished difference Result 11672 states and 16385 transitions. [2020-10-14 02:45:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:45:14,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-14 02:45:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:14,853 INFO L225 Difference]: With dead ends: 11672 [2020-10-14 02:45:14,854 INFO L226 Difference]: Without dead ends: 7005 [2020-10-14 02:45:14,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:45:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-14 02:45:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 7001. [2020-10-14 02:45:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2020-10-14 02:45:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 9579 transitions. [2020-10-14 02:45:15,114 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 9579 transitions. Word has length 137 [2020-10-14 02:45:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:15,116 INFO L479 AbstractCegarLoop]: Abstraction has 7001 states and 9579 transitions. [2020-10-14 02:45:15,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:45:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 9579 transitions. [2020-10-14 02:45:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 02:45:15,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:15,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:45:15,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:45:15,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:15,126 INFO L82 PathProgramCache]: Analyzing trace with hash -843140631, now seen corresponding path program 1 times [2020-10-14 02:45:15,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:15,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153056535] [2020-10-14 02:45:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:17,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 02:45:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:17,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-14 02:45:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:17,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:45:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:45:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:45:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:17,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:17,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:17,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:17,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:45:17,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:17,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:17,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:17,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:17,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:45:18,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 02:45:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:18,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:45:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:45:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:45:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 02:45:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:18,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:45:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:18,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153056535] [2020-10-14 02:45:18,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:18,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:18,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154568684] [2020-10-14 02:45:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:18,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:18,568 INFO L87 Difference]: Start difference. First operand 7001 states and 9579 transitions. Second operand 7 states. [2020-10-14 02:45:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:38,080 INFO L93 Difference]: Finished difference Result 14962 states and 20688 transitions. [2020-10-14 02:45:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:38,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-14 02:45:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:38,118 INFO L225 Difference]: With dead ends: 14962 [2020-10-14 02:45:38,118 INFO L226 Difference]: Without dead ends: 7967 [2020-10-14 02:45:38,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2020-10-14 02:45:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 7917. [2020-10-14 02:45:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7917 states. [2020-10-14 02:45:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 9778 transitions. [2020-10-14 02:45:38,344 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 9778 transitions. Word has length 182 [2020-10-14 02:45:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:38,345 INFO L479 AbstractCegarLoop]: Abstraction has 7917 states and 9778 transitions. [2020-10-14 02:45:38,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 9778 transitions. [2020-10-14 02:45:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 02:45:38,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:38,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:38,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:45:38,350 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1154409627, now seen corresponding path program 1 times [2020-10-14 02:45:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:38,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942339341] [2020-10-14 02:45:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:42,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 02:45:42,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4521 [2020-10-14 02:45:42,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:42,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 02:45:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:45:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:43,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:43,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:43,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:43,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:45:43,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:43,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:45:43,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 02:45:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:43,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:45:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 02:45:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:45:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:45:43,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:43,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:45:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:43,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942339341] [2020-10-14 02:45:43,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:43,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:43,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021606968] [2020-10-14 02:45:43,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:43,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:43,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:43,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:43,608 INFO L87 Difference]: Start difference. First operand 7917 states and 9778 transitions. Second operand 7 states. [2020-10-14 02:46:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:03,220 INFO L93 Difference]: Finished difference Result 19168 states and 24450 transitions. [2020-10-14 02:46:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:46:03,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-14 02:46:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:03,264 INFO L225 Difference]: With dead ends: 19168 [2020-10-14 02:46:03,265 INFO L226 Difference]: Without dead ends: 11257 [2020-10-14 02:46:03,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:46:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2020-10-14 02:46:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 11136. [2020-10-14 02:46:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11136 states. [2020-10-14 02:46:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 13669 transitions. [2020-10-14 02:46:03,537 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 13669 transitions. Word has length 196 [2020-10-14 02:46:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:03,537 INFO L479 AbstractCegarLoop]: Abstraction has 11136 states and 13669 transitions. [2020-10-14 02:46:03,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:46:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 13669 transitions. [2020-10-14 02:46:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 02:46:03,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:03,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:46:03,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:46:03,547 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1596123739, now seen corresponding path program 1 times [2020-10-14 02:46:03,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:03,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238898538] [2020-10-14 02:46:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 02:46:05,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:46:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-10-14 02:46:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-14 02:46:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 02:46:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:05,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:46:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:05,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:46:05,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:46:05,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 02:46:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:46:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:46:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:05,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:46:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 02:46:05,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238898538] [2020-10-14 02:46:05,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:05,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:46:05,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108382151] [2020-10-14 02:46:05,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:46:05,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:05,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:46:05,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:46:05,449 INFO L87 Difference]: Start difference. First operand 11136 states and 13669 transitions. Second operand 5 states. [2020-10-14 02:46:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:21,030 INFO L93 Difference]: Finished difference Result 31040 states and 39003 transitions. [2020-10-14 02:46:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:46:21,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-14 02:46:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:21,096 INFO L225 Difference]: With dead ends: 31040 [2020-10-14 02:46:21,096 INFO L226 Difference]: Without dead ends: 20673 [2020-10-14 02:46:21,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:46:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20673 states. [2020-10-14 02:46:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20673 to 20673. [2020-10-14 02:46:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20673 states. [2020-10-14 02:46:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20673 states to 20673 states and 25368 transitions. [2020-10-14 02:46:21,517 INFO L78 Accepts]: Start accepts. Automaton has 20673 states and 25368 transitions. Word has length 228 [2020-10-14 02:46:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:21,518 INFO L479 AbstractCegarLoop]: Abstraction has 20673 states and 25368 transitions. [2020-10-14 02:46:21,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:46:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 20673 states and 25368 transitions. [2020-10-14 02:46:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 02:46:21,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:21,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:46:21,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:46:21,527 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1715186914, now seen corresponding path program 1 times [2020-10-14 02:46:21,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:21,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044827522] [2020-10-14 02:46:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:26,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:26,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 02:46:26,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:46:26,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 02:46:26,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:26,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:46:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 02:46:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:46:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:26,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:26,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:26,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:46:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:46:26,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:26,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:46:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:46:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:27,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:27,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:46:27,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:27,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 02:46:27,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:27,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:27,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 02:46:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:46:27,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044827522] [2020-10-14 02:46:27,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:27,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:27,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712627093] [2020-10-14 02:46:27,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:27,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:27,213 INFO L87 Difference]: Start difference. First operand 20673 states and 25368 transitions. Second operand 7 states. [2020-10-14 02:46:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:44,702 INFO L93 Difference]: Finished difference Result 41104 states and 50821 transitions. [2020-10-14 02:46:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:46:44,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 02:46:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:46:44,759 INFO L225 Difference]: With dead ends: 41104 [2020-10-14 02:46:44,760 INFO L226 Difference]: Without dead ends: 21200 [2020-10-14 02:46:44,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:46:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21200 states. [2020-10-14 02:46:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21200 to 21127. [2020-10-14 02:46:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21127 states. [2020-10-14 02:46:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 24391 transitions. [2020-10-14 02:46:45,157 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 24391 transitions. Word has length 271 [2020-10-14 02:46:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:46:45,158 INFO L479 AbstractCegarLoop]: Abstraction has 21127 states and 24391 transitions. [2020-10-14 02:46:45,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:46:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 24391 transitions. [2020-10-14 02:46:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 02:46:45,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:46:45,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 02:46:45,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:46:45,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:46:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:46:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1980917176, now seen corresponding path program 1 times [2020-10-14 02:46:45,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:46:45,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065264668] [2020-10-14 02:46:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:46:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:50,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 02:46:50,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:46:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 02:46:50,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:50,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-14 02:46:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 02:46:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:46:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:50,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:46:50,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:46:50,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:50,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:46:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:46:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:46:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:50,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:46:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:46:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:46:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:46:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:46:50,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:46:50,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:46:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:46:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:46:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:50,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-14 02:46:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:46:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:46:50,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:46:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:46:50,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:46:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 02:46:50,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:46:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:46:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:46:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:46:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:46:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:46:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 02:46:50,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065264668] [2020-10-14 02:46:50,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:46:50,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:46:50,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044975982] [2020-10-14 02:46:50,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:46:50,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:46:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:46:50,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:46:50,978 INFO L87 Difference]: Start difference. First operand 21127 states and 24391 transitions. Second operand 7 states. [2020-10-14 02:47:08,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:08,022 INFO L93 Difference]: Finished difference Result 46288 states and 54494 transitions. [2020-10-14 02:47:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:47:08,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-14 02:47:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:08,089 INFO L225 Difference]: With dead ends: 46288 [2020-10-14 02:47:08,089 INFO L226 Difference]: Without dead ends: 25943 [2020-10-14 02:47:08,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:47:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25943 states. [2020-10-14 02:47:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25943 to 25891. [2020-10-14 02:47:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25891 states. [2020-10-14 02:47:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25891 states to 25891 states and 29651 transitions. [2020-10-14 02:47:08,541 INFO L78 Accepts]: Start accepts. Automaton has 25891 states and 29651 transitions. Word has length 328 [2020-10-14 02:47:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:08,542 INFO L479 AbstractCegarLoop]: Abstraction has 25891 states and 29651 transitions. [2020-10-14 02:47:08,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:47:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 25891 states and 29651 transitions. [2020-10-14 02:47:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 02:47:08,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:08,566 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 02:47:08,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:47:08,566 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1059899055, now seen corresponding path program 1 times [2020-10-14 02:47:08,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:08,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215388531] [2020-10-14 02:47:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:08,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:13,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:13,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-14 02:47:13,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:47:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 02:47:13,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:13,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 02:47:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:47:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:13,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:13,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:13,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:47:13,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:13,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:47:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:13,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:47:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 02:47:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:13,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:13,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 02:47:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-14 02:47:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:47:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:47:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:14,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:47:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 184 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:47:14,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215388531] [2020-10-14 02:47:14,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:14,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:47:14,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469838976] [2020-10-14 02:47:14,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:47:14,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:14,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:47:14,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:47:14,178 INFO L87 Difference]: Start difference. First operand 25891 states and 29651 transitions. Second operand 8 states. [2020-10-14 02:47:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:47:32,550 INFO L93 Difference]: Finished difference Result 51064 states and 58601 transitions. [2020-10-14 02:47:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:47:32,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 351 [2020-10-14 02:47:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:47:32,638 INFO L225 Difference]: With dead ends: 51064 [2020-10-14 02:47:32,638 INFO L226 Difference]: Without dead ends: 25964 [2020-10-14 02:47:32,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:47:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25964 states. [2020-10-14 02:47:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25964 to 25901. [2020-10-14 02:47:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25901 states. [2020-10-14 02:47:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25901 states to 25901 states and 29259 transitions. [2020-10-14 02:47:33,155 INFO L78 Accepts]: Start accepts. Automaton has 25901 states and 29259 transitions. Word has length 351 [2020-10-14 02:47:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:47:33,156 INFO L479 AbstractCegarLoop]: Abstraction has 25901 states and 29259 transitions. [2020-10-14 02:47:33,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:47:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25901 states and 29259 transitions. [2020-10-14 02:47:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-14 02:47:33,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:47:33,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:47:33,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:47:33,170 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:47:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:47:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1463057950, now seen corresponding path program 1 times [2020-10-14 02:47:33,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:47:33,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271024116] [2020-10-14 02:47:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:47:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:38,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:38,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-14 02:47:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:47:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 02:47:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:38,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-14 02:47:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 02:47:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:47:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:38,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:47:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:47:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:38,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:47:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:38,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:47:38,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 02:47:38,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:47:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:47:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:47:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:47:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 02:47:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:47:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:47:38,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:47:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:47:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:47:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 02:47:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:47:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 02:47:38,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271024116] [2020-10-14 02:47:38,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:47:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:47:38,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732079291] [2020-10-14 02:47:38,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:47:38,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:47:38,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:47:38,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:47:38,966 INFO L87 Difference]: Start difference. First operand 25901 states and 29259 transitions. Second operand 7 states.