/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:34:11,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:34:11,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:34:11,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:34:11,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:34:11,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:34:11,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:34:11,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:34:11,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:34:11,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:34:11,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:34:11,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:34:11,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:34:11,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:34:11,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:34:11,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:34:11,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:34:11,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:34:11,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:34:11,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:34:11,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:34:11,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:34:11,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:34:11,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:34:11,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:34:11,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:34:11,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:34:11,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:34:11,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:34:11,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:34:11,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:34:11,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:34:11,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:34:11,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:34:11,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:34:11,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:34:11,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:34:11,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:34:11,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:34:11,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:34:11,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:34:11,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:34:11,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:34:11,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:34:11,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:34:11,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:34:11,945 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:34:11,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:34:11,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:34:11,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:34:11,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:34:11,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:34:11,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:34:11,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:34:11,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:34:11,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:34:11,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:34:11,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:34:11,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:34:11,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:34:11,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:34:11,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:34:11,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:34:11,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:11,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:34:11,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:34:11,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:34:11,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:34:11,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:34:11,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:34:11,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:34:11,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:34:12,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:34:12,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:34:12,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:34:12,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:34:12,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:34:12,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31.c [2020-10-13 09:34:12,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c22a6bc09/fb1d6f7efcc749bd83a034f3b5f8ad31/FLAG235ced4e9 [2020-10-13 09:34:13,242 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:34:13,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label31.c [2020-10-13 09:34:13,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c22a6bc09/fb1d6f7efcc749bd83a034f3b5f8ad31/FLAG235ced4e9 [2020-10-13 09:34:13,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c22a6bc09/fb1d6f7efcc749bd83a034f3b5f8ad31 [2020-10-13 09:34:13,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:34:13,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:34:13,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:13,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:34:13,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:34:13,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:13" (1/1) ... [2020-10-13 09:34:13,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:13, skipping insertion in model container [2020-10-13 09:34:13,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:13" (1/1) ... [2020-10-13 09:34:13,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:34:13,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:34:15,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:15,242 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:34:15,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:15,782 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:34:15,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15 WrapperNode [2020-10-13 09:34:15,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:15,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:34:15,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:34:15,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:34:15,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:15,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:15,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:15,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:16,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:16,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:16,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... [2020-10-13 09:34:16,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:34:16,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:34:16,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:34:16,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:34:16,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:34:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:34:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:34:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:34:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:34:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:34:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:34:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:34:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:34:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:34:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:34:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:34:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:34:23,223 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:34:23,224 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:34:23,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:23 BoogieIcfgContainer [2020-10-13 09:34:23,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:34:23,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:34:23,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:34:23,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:34:23,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:13" (1/3) ... [2020-10-13 09:34:23,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5387ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:23, skipping insertion in model container [2020-10-13 09:34:23,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:15" (2/3) ... [2020-10-13 09:34:23,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5387ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:23, skipping insertion in model container [2020-10-13 09:34:23,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:23" (3/3) ... [2020-10-13 09:34:23,244 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label31.c [2020-10-13 09:34:23,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:34:23,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:34:23,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:34:23,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:34:23,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:34:23,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:34:23,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:34:23,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:34:23,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:34:23,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:34:23,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:34:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:34:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 09:34:23,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:23,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:23,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:23,361 INFO L82 PathProgramCache]: Analyzing trace with hash -46686471, now seen corresponding path program 1 times [2020-10-13 09:34:23,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:23,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734877944] [2020-10-13 09:34:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:23,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:23,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:34:23,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:23,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-13 09:34:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:34:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:34:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:34:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:23,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:23,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:23,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:34:23,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:23,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:23,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:23,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734877944] [2020-10-13 09:34:23,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:34:23,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:34:23,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22123132] [2020-10-13 09:34:23,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:34:23,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:34:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:34:23,992 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:34:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:34,993 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:34:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:34,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 09:34:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:35,026 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:34:35,027 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:34:35,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:34:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:34:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:34:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:34:35,202 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 14 [2020-10-13 09:34:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:35,203 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:34:35,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:34:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:34:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 09:34:35,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:35,210 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:34:35,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:34:35,212 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:35,212 INFO L82 PathProgramCache]: Analyzing trace with hash -668197308, now seen corresponding path program 1 times [2020-10-13 09:34:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:35,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788520311] [2020-10-13 09:34:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:34:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:34:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1509 [2020-10-13 09:34:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:34:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:34:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:34:36,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:36,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:36,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:36,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:34:36,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:34:37,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:34:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:34:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 09:34:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:37,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788520311] [2020-10-13 09:34:37,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:37,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:37,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48474572] [2020-10-13 09:34:37,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:37,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:37,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:37,111 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-13 09:34:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:49,319 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-13 09:34:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:49,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 09:34:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:49,330 INFO L225 Difference]: With dead ends: 2864 [2020-10-13 09:34:49,331 INFO L226 Difference]: Without dead ends: 1879 [2020-10-13 09:34:49,335 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 [2020-10-13 09:34:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-13 09:34:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-13 09:34:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-13 09:34:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2566 transitions. [2020-10-13 09:34:49,397 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2566 transitions. Word has length 85 [2020-10-13 09:34:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:49,398 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2566 transitions. [2020-10-13 09:34:49,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2566 transitions. [2020-10-13 09:34:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 09:34:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:49,401 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:34:49,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:34:49,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1839741392, now seen corresponding path program 1 times [2020-10-13 09:34:49,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:49,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379790816] [2020-10-13 09:34:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:50,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:34:50,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-13 09:34:50,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:34:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:34:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:34:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:50,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:50,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:34:50,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 09:34:50,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:34:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:34:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:34:50,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:50,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379790816] [2020-10-13 09:34:50,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:50,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:34:50,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156143660] [2020-10-13 09:34:50,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:34:50,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:50,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:34:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:34:50,726 INFO L87 Difference]: Start difference. First operand 1875 states and 2566 transitions. Second operand 8 states. [2020-10-13 09:35:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:13,539 INFO L93 Difference]: Finished difference Result 5187 states and 7567 transitions. [2020-10-13 09:35:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:35:13,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-13 09:35:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:13,573 INFO L225 Difference]: With dead ends: 5187 [2020-10-13 09:35:13,573 INFO L226 Difference]: Without dead ends: 4204 [2020-10-13 09:35:13,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:35:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2020-10-13 09:35:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3712. [2020-10-13 09:35:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-10-13 09:35:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5113 transitions. [2020-10-13 09:35:13,737 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5113 transitions. Word has length 88 [2020-10-13 09:35:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:13,738 INFO L479 AbstractCegarLoop]: Abstraction has 3712 states and 5113 transitions. [2020-10-13 09:35:13,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:35:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5113 transitions. [2020-10-13 09:35:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 09:35:13,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:13,741 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:35:13,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:35:13,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash -893166540, now seen corresponding path program 1 times [2020-10-13 09:35:13,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:13,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37151607] [2020-10-13 09:35:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:35:14,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-13 09:35:14,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:35:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:35:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:14,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:14,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:14,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:14,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:35:14,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:35:14,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:35:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:14,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37151607] [2020-10-13 09:35:14,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:14,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:14,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101266418] [2020-10-13 09:35:14,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:14,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:14,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:14,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:14,979 INFO L87 Difference]: Start difference. First operand 3712 states and 5113 transitions. Second operand 5 states. [2020-10-13 09:35:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:33,076 INFO L93 Difference]: Finished difference Result 7460 states and 11018 transitions. [2020-10-13 09:35:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:33,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 09:35:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:33,109 INFO L225 Difference]: With dead ends: 7460 [2020-10-13 09:35:33,110 INFO L226 Difference]: Without dead ends: 5518 [2020-10-13 09:35:33,117 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 [2020-10-13 09:35:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2020-10-13 09:35:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5498. [2020-10-13 09:35:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5498 states. [2020-10-13 09:35:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7526 transitions. [2020-10-13 09:35:33,316 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7526 transitions. Word has length 93 [2020-10-13 09:35:33,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:33,317 INFO L479 AbstractCegarLoop]: Abstraction has 5498 states and 7526 transitions. [2020-10-13 09:35:33,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:33,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7526 transitions. [2020-10-13 09:35:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 09:35:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:33,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:33,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:35:33,329 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:33,330 INFO L82 PathProgramCache]: Analyzing trace with hash -609402326, now seen corresponding path program 1 times [2020-10-13 09:35:33,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:33,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319415032] [2020-10-13 09:35:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 09:35:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-13 09:35:34,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 09:35:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:35:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:35:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:34,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:35:34,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:35:34,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:35:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:34,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319415032] [2020-10-13 09:35:34,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:34,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:34,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458292721] [2020-10-13 09:35:34,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:34,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:34,922 INFO L87 Difference]: Start difference. First operand 5498 states and 7526 transitions. Second operand 5 states. [2020-10-13 09:35:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:56,792 INFO L93 Difference]: Finished difference Result 13657 states and 19618 transitions. [2020-10-13 09:35:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:56,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 09:35:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:56,851 INFO L225 Difference]: With dead ends: 13657 [2020-10-13 09:35:56,852 INFO L226 Difference]: Without dead ends: 9926 [2020-10-13 09:35:56,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9926 states. [2020-10-13 09:35:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9926 to 8165. [2020-10-13 09:35:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8165 states. [2020-10-13 09:35:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 11879 transitions. [2020-10-13 09:35:57,189 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 11879 transitions. Word has length 116 [2020-10-13 09:35:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:57,193 INFO L479 AbstractCegarLoop]: Abstraction has 8165 states and 11879 transitions. [2020-10-13 09:35:57,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 11879 transitions. [2020-10-13 09:35:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 09:35:57,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:57,198 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:57,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:35:57,198 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:57,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1339584181, now seen corresponding path program 1 times [2020-10-13 09:35:57,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:57,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5193421] [2020-10-13 09:35:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:35:59,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:35:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-13 09:35:59,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:35:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:35:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:59,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:35:59,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:35:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:35:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:35:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:35:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:00,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:36:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:36:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 09:36:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:36:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:36:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:36:00,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5193421] [2020-10-13 09:36:00,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:00,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:36:00,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075923464] [2020-10-13 09:36:00,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:36:00,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:00,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:36:00,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:36:00,363 INFO L87 Difference]: Start difference. First operand 8165 states and 11879 transitions. Second operand 7 states. [2020-10-13 09:36:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:27,033 INFO L93 Difference]: Finished difference Result 14463 states and 22313 transitions. [2020-10-13 09:36:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:36:27,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-13 09:36:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:27,093 INFO L225 Difference]: With dead ends: 14463 [2020-10-13 09:36:27,093 INFO L226 Difference]: Without dead ends: 8891 [2020-10-13 09:36:27,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:36:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2020-10-13 09:36:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8808. [2020-10-13 09:36:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8808 states. [2020-10-13 09:36:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8808 states to 8808 states and 13056 transitions. [2020-10-13 09:36:27,369 INFO L78 Accepts]: Start accepts. Automaton has 8808 states and 13056 transitions. Word has length 167 [2020-10-13 09:36:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:27,370 INFO L479 AbstractCegarLoop]: Abstraction has 8808 states and 13056 transitions. [2020-10-13 09:36:27,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:36:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8808 states and 13056 transitions. [2020-10-13 09:36:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 09:36:27,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:27,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:27,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:36:27,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1847957390, now seen corresponding path program 1 times [2020-10-13 09:36:27,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:27,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731013534] [2020-10-13 09:36:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:27,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:27,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:36:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-13 09:36:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:36:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:36:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:29,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:29,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:36:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:36:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 09:36:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:29,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731013534] [2020-10-13 09:36:29,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:29,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:29,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953686798] [2020-10-13 09:36:29,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:29,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:29,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:29,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:29,588 INFO L87 Difference]: Start difference. First operand 8808 states and 13056 transitions. Second operand 5 states. [2020-10-13 09:36:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:49,718 INFO L93 Difference]: Finished difference Result 21198 states and 32268 transitions. [2020-10-13 09:36:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:49,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 09:36:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:49,769 INFO L225 Difference]: With dead ends: 21198 [2020-10-13 09:36:49,769 INFO L226 Difference]: Without dead ends: 12829 [2020-10-13 09:36:49,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2020-10-13 09:36:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 10633. [2020-10-13 09:36:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10633 states. [2020-10-13 09:36:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10633 states to 10633 states and 15928 transitions. [2020-10-13 09:36:50,101 INFO L78 Accepts]: Start accepts. Automaton has 10633 states and 15928 transitions. Word has length 169 [2020-10-13 09:36:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:50,101 INFO L479 AbstractCegarLoop]: Abstraction has 10633 states and 15928 transitions. [2020-10-13 09:36:50,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 10633 states and 15928 transitions. [2020-10-13 09:36:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 09:36:50,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:50,106 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:50,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:36:50,107 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1857053703, now seen corresponding path program 1 times [2020-10-13 09:36:50,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:50,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753911317] [2020-10-13 09:36:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:52,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:52,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 09:36:52,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:36:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2121 [2020-10-13 09:36:52,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:36:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:36:52,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:36:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:52,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:36:52,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:52,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:36:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:36:52,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:36:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:36:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:36:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:36:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:36:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:36:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:36:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:36:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:36:52,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753911317] [2020-10-13 09:36:52,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:52,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:36:52,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067190316] [2020-10-13 09:36:52,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:36:52,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:52,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:36:52,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:36:52,925 INFO L87 Difference]: Start difference. First operand 10633 states and 15928 transitions. Second operand 8 states. [2020-10-13 09:37:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:31,645 INFO L93 Difference]: Finished difference Result 25917 states and 41795 transitions. [2020-10-13 09:37:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:37:31,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-10-13 09:37:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:31,819 INFO L225 Difference]: With dead ends: 25917 [2020-10-13 09:37:31,819 INFO L226 Difference]: Without dead ends: 18869 [2020-10-13 09:37:31,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:37:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18869 states. [2020-10-13 09:37:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18869 to 16556. [2020-10-13 09:37:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16556 states. [2020-10-13 09:37:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16556 states to 16556 states and 25931 transitions. [2020-10-13 09:37:32,658 INFO L78 Accepts]: Start accepts. Automaton has 16556 states and 25931 transitions. Word has length 185 [2020-10-13 09:37:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:32,659 INFO L479 AbstractCegarLoop]: Abstraction has 16556 states and 25931 transitions. [2020-10-13 09:37:32,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:37:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 16556 states and 25931 transitions. [2020-10-13 09:37:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 09:37:32,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:32,667 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:32,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:37:32,668 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:32,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1530595691, now seen corresponding path program 1 times [2020-10-13 09:37:32,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:32,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309281096] [2020-10-13 09:37:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:33,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 09:37:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:37:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:37:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 09:37:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:37:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:37,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:37,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:37,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:37:37,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:37,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:37,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:38,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:38,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:37:38,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:37:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 09:37:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:38,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:38,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:37:38,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:37:38,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:37:38,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:37:38,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309281096] [2020-10-13 09:37:38,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:38,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:38,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148280856] [2020-10-13 09:37:38,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:38,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:38,315 INFO L87 Difference]: Start difference. First operand 16556 states and 25931 transitions. Second operand 5 states. [2020-10-13 09:38:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:00,248 INFO L93 Difference]: Finished difference Result 35670 states and 59812 transitions. [2020-10-13 09:38:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:38:00,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-13 09:38:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:00,342 INFO L225 Difference]: With dead ends: 35670 [2020-10-13 09:38:00,342 INFO L226 Difference]: Without dead ends: 19553 [2020-10-13 09:38:00,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:38:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2020-10-13 09:38:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 19479. [2020-10-13 09:38:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19479 states. [2020-10-13 09:38:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19479 states to 19479 states and 28553 transitions. [2020-10-13 09:38:01,898 INFO L78 Accepts]: Start accepts. Automaton has 19479 states and 28553 transitions. Word has length 191 [2020-10-13 09:38:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:01,899 INFO L479 AbstractCegarLoop]: Abstraction has 19479 states and 28553 transitions. [2020-10-13 09:38:01,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:38:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 19479 states and 28553 transitions. [2020-10-13 09:38:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 09:38:01,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:01,907 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:01,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:38:01,907 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1284333888, now seen corresponding path program 1 times [2020-10-13 09:38:01,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:01,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121614643] [2020-10-13 09:38:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:07,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:07,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 09:38:07,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:38:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-13 09:38:07,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 09:38:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:38:07,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:07,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:07,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:07,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:38:07,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:38:07,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:07,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 09:38:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:07,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:07,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:38:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:38:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:38:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 09:38:07,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121614643] [2020-10-13 09:38:07,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:38:07,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:38:07,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202492377] [2020-10-13 09:38:07,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:38:07,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:38:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:38:07,728 INFO L87 Difference]: Start difference. First operand 19479 states and 28553 transitions. Second operand 5 states.