/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:52,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:52,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:52,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:52,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:52,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:52,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:52,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:52,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:52,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:52,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:52,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:52,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:52,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:52,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:52,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:52,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:52,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:52,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:52,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:52,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:52,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:52,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:52,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:52,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:52,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:52,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:52,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:52,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:52,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:52,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:52,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:52,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:52,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:52,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:52,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:52,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:52,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:52,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:52,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:52,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:52,930 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 [2020-09-24 19:24:52,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:52,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:52,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:52,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:52,985 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:52,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:52,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:52,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:52,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:52,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:52,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:52,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:52,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:52,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:52,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:52,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:52,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:52,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:52,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:52,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:52,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:52,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:52,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:52,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:52,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:52,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:52,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:52,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:52,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:52,992 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:53,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:53,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:53,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:53,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:53,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:53,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 19:24:53,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f7a75d7/4391759adb0f49119006b110423f8137/FLAGbc1a642d0 [2020-09-24 19:24:54,237 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:54,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 19:24:54,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f7a75d7/4391759adb0f49119006b110423f8137/FLAGbc1a642d0 [2020-09-24 19:24:54,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43f7a75d7/4391759adb0f49119006b110423f8137 [2020-09-24 19:24:54,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:54,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:54,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:54,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:54,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:54,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:54" (1/1) ... [2020-09-24 19:24:54,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c9999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:54, skipping insertion in model container [2020-09-24 19:24:54,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:54" (1/1) ... [2020-09-24 19:24:54,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:54,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:55,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:55,107 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:55,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:55,332 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:55,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55 WrapperNode [2020-09-24 19:24:55,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:55,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:55,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:55,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:55,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (1/1) ... [2020-09-24 19:24:55,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:55,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:55,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:55,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:55,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (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 [2020-09-24 19:24:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:24:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:24:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:56,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:56,944 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:24:56,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:56 BoogieIcfgContainer [2020-09-24 19:24:56,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:56,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:56,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:56,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:56,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:54" (1/3) ... [2020-09-24 19:24:56,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aae5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:56, skipping insertion in model container [2020-09-24 19:24:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:55" (2/3) ... [2020-09-24 19:24:56,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aae5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:56, skipping insertion in model container [2020-09-24 19:24:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:56" (3/3) ... [2020-09-24 19:24:56,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-24 19:24:56,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:56,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:57,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:24:57,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:57,047 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:57,047 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:57,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:57,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:57,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:57,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:57,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:24:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 19:24:57,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:57,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:57,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-24 19:24:57,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:57,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261755840] [2020-09-24 19:24:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 19:24:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:24:58,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:24:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:24:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:24:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:24:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:24:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:24:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:59,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261755840] [2020-09-24 19:24:59,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:59,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:59,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65910797] [2020-09-24 19:24:59,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:59,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:59,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:59,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:59,111 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:01,464 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-24 19:25:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:01,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-24 19:25:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:01,504 INFO L225 Difference]: With dead ends: 1340 [2020-09-24 19:25:01,505 INFO L226 Difference]: Without dead ends: 741 [2020-09-24 19:25:01,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-24 19:25:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-24 19:25:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 19:25:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 19:25:01,625 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 152 [2020-09-24 19:25:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:01,626 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 19:25:01,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 19:25:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 19:25:01,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:01,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:01,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:01,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:01,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:01,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-24 19:25:01,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:01,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721188073] [2020-09-24 19:25:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 19:25:02,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-24 19:25:02,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:25:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:25:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:25:02,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:03,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721188073] [2020-09-24 19:25:03,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:03,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:25:03,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036666506] [2020-09-24 19:25:03,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:03,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:03,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:03,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:03,015 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 7 states. [2020-09-24 19:25:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:05,419 INFO L93 Difference]: Finished difference Result 1683 states and 2059 transitions. [2020-09-24 19:25:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:05,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-24 19:25:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:05,427 INFO L225 Difference]: With dead ends: 1683 [2020-09-24 19:25:05,427 INFO L226 Difference]: Without dead ends: 1043 [2020-09-24 19:25:05,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-09-24 19:25:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 968. [2020-09-24 19:25:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-24 19:25:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1156 transitions. [2020-09-24 19:25:05,481 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1156 transitions. Word has length 173 [2020-09-24 19:25:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:05,482 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1156 transitions. [2020-09-24 19:25:05,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1156 transitions. [2020-09-24 19:25:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 19:25:05,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:05,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:05,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:05,488 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:05,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1615076354, now seen corresponding path program 1 times [2020-09-24 19:25:05,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:05,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911225474] [2020-09-24 19:25:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 19:25:06,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 19:25:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:06,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:06,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:25:06,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:06,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911225474] [2020-09-24 19:25:06,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:06,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:06,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952939271] [2020-09-24 19:25:06,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:06,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:06,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:06,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:06,944 INFO L87 Difference]: Start difference. First operand 968 states and 1156 transitions. Second operand 5 states. [2020-09-24 19:25:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:08,421 INFO L93 Difference]: Finished difference Result 2564 states and 3179 transitions. [2020-09-24 19:25:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:08,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-24 19:25:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:08,433 INFO L225 Difference]: With dead ends: 2564 [2020-09-24 19:25:08,433 INFO L226 Difference]: Without dead ends: 1620 [2020-09-24 19:25:08,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-09-24 19:25:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1546. [2020-09-24 19:25:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-24 19:25:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1871 transitions. [2020-09-24 19:25:08,491 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1871 transitions. Word has length 173 [2020-09-24 19:25:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:08,492 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 1871 transitions. [2020-09-24 19:25:08,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1871 transitions. [2020-09-24 19:25:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 19:25:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:08,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:08,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:08,501 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash -241490595, now seen corresponding path program 1 times [2020-09-24 19:25:08,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:08,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320233592] [2020-09-24 19:25:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 19:25:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:25:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:25:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:25:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:09,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:09,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:09,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:09,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:25:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:25:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:09,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:09,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:09,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:25:09,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:25:09,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:09,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320233592] [2020-09-24 19:25:09,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:09,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:09,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400373934] [2020-09-24 19:25:09,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:09,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:09,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:09,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:09,836 INFO L87 Difference]: Start difference. First operand 1546 states and 1871 transitions. Second operand 8 states. [2020-09-24 19:25:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:13,717 INFO L93 Difference]: Finished difference Result 5296 states and 6771 transitions. [2020-09-24 19:25:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:25:13,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-24 19:25:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:13,738 INFO L225 Difference]: With dead ends: 5296 [2020-09-24 19:25:13,738 INFO L226 Difference]: Without dead ends: 3625 [2020-09-24 19:25:13,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:25:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2020-09-24 19:25:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 2748. [2020-09-24 19:25:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2748 states. [2020-09-24 19:25:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3312 transitions. [2020-09-24 19:25:13,849 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3312 transitions. Word has length 190 [2020-09-24 19:25:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:13,849 INFO L479 AbstractCegarLoop]: Abstraction has 2748 states and 3312 transitions. [2020-09-24 19:25:13,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3312 transitions. [2020-09-24 19:25:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 19:25:13,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:13,862 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:13,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:13,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1694189499, now seen corresponding path program 1 times [2020-09-24 19:25:13,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:13,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418387575] [2020-09-24 19:25:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:14,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-24 19:25:14,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:25:14,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:25:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:25:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:15,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:15,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:25:15,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:25:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:15,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:25:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:15,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418387575] [2020-09-24 19:25:15,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:15,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:15,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238233048] [2020-09-24 19:25:15,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:15,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:15,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:15,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:15,286 INFO L87 Difference]: Start difference. First operand 2748 states and 3312 transitions. Second operand 7 states. [2020-09-24 19:25:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:17,829 INFO L93 Difference]: Finished difference Result 6461 states and 7887 transitions. [2020-09-24 19:25:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:17,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-09-24 19:25:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:17,850 INFO L225 Difference]: With dead ends: 6461 [2020-09-24 19:25:17,851 INFO L226 Difference]: Without dead ends: 3737 [2020-09-24 19:25:17,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-09-24 19:25:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3330. [2020-09-24 19:25:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3330 states. [2020-09-24 19:25:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 3987 transitions. [2020-09-24 19:25:17,972 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 3987 transitions. Word has length 204 [2020-09-24 19:25:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:17,972 INFO L479 AbstractCegarLoop]: Abstraction has 3330 states and 3987 transitions. [2020-09-24 19:25:17,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 3987 transitions. [2020-09-24 19:25:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 19:25:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:17,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:17,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:17,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1627785973, now seen corresponding path program 1 times [2020-09-24 19:25:17,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:17,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846070536] [2020-09-24 19:25:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:18,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 19:25:19,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:25:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:19,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:19,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:25:19,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 19:25:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:19,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:19,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:25:19,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:25:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:19,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 73 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 19:25:19,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846070536] [2020-09-24 19:25:19,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:19,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:19,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078083879] [2020-09-24 19:25:19,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:19,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:19,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:19,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:19,467 INFO L87 Difference]: Start difference. First operand 3330 states and 3987 transitions. Second operand 7 states. [2020-09-24 19:25:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:22,179 INFO L93 Difference]: Finished difference Result 7449 states and 9014 transitions. [2020-09-24 19:25:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:22,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-24 19:25:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:22,199 INFO L225 Difference]: With dead ends: 7449 [2020-09-24 19:25:22,200 INFO L226 Difference]: Without dead ends: 3927 [2020-09-24 19:25:22,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-09-24 19:25:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3873. [2020-09-24 19:25:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3873 states. [2020-09-24 19:25:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 4536 transitions. [2020-09-24 19:25:22,308 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 4536 transitions. Word has length 232 [2020-09-24 19:25:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:22,309 INFO L479 AbstractCegarLoop]: Abstraction has 3873 states and 4536 transitions. [2020-09-24 19:25:22,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 4536 transitions. [2020-09-24 19:25:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 19:25:22,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:22,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:22,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:22,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 183414329, now seen corresponding path program 1 times [2020-09-24 19:25:22,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:22,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800753345] [2020-09-24 19:25:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-24 19:25:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 19:25:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:25:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:25:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:25:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:23,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:25:23,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:25:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:25:23,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:25:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 85 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 19:25:23,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800753345] [2020-09-24 19:25:23,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:23,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:23,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327645151] [2020-09-24 19:25:23,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:23,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:23,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:23,942 INFO L87 Difference]: Start difference. First operand 3873 states and 4536 transitions. Second operand 8 states. [2020-09-24 19:25:24,569 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 19:25:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:26,415 INFO L93 Difference]: Finished difference Result 7929 states and 9285 transitions. [2020-09-24 19:25:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:25:26,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-09-24 19:25:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:26,436 INFO L225 Difference]: With dead ends: 7929 [2020-09-24 19:25:26,437 INFO L226 Difference]: Without dead ends: 4080 [2020-09-24 19:25:26,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:25:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2020-09-24 19:25:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3734. [2020-09-24 19:25:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3734 states. [2020-09-24 19:25:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 4301 transitions. [2020-09-24 19:25:26,542 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 4301 transitions. Word has length 240 [2020-09-24 19:25:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:26,542 INFO L479 AbstractCegarLoop]: Abstraction has 3734 states and 4301 transitions. [2020-09-24 19:25:26,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 4301 transitions. [2020-09-24 19:25:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-24 19:25:26,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:26,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:26,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:26,603 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:26,603 INFO L82 PathProgramCache]: Analyzing trace with hash -493226817, now seen corresponding path program 1 times [2020-09-24 19:25:26,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:26,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377027695] [2020-09-24 19:25:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:25:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:25:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:27,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:27,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:27,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:25:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:25:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:28,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:28,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 19:25:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:25:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:28,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377027695] [2020-09-24 19:25:28,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:28,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:28,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880692722] [2020-09-24 19:25:28,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:28,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:28,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:28,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:28,351 INFO L87 Difference]: Start difference. First operand 3734 states and 4301 transitions. Second operand 8 states. [2020-09-24 19:25:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:31,459 INFO L93 Difference]: Finished difference Result 7505 states and 8649 transitions. [2020-09-24 19:25:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:31,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 281 [2020-09-24 19:25:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:31,476 INFO L225 Difference]: With dead ends: 7505 [2020-09-24 19:25:31,477 INFO L226 Difference]: Without dead ends: 3795 [2020-09-24 19:25:31,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2020-09-24 19:25:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3593. [2020-09-24 19:25:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2020-09-24 19:25:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4105 transitions. [2020-09-24 19:25:31,561 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4105 transitions. Word has length 281 [2020-09-24 19:25:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:31,562 INFO L479 AbstractCegarLoop]: Abstraction has 3593 states and 4105 transitions. [2020-09-24 19:25:31,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4105 transitions. [2020-09-24 19:25:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-24 19:25:31,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:31,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:31,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:31,577 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:31,578 INFO L82 PathProgramCache]: Analyzing trace with hash -180561137, now seen corresponding path program 1 times [2020-09-24 19:25:31,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:31,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84490452] [2020-09-24 19:25:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-24 19:25:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:25:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:32,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:32,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:25:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:25:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 19:25:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:33,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 19:25:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:25:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 19:25:33,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84490452] [2020-09-24 19:25:33,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:33,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:33,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049681704] [2020-09-24 19:25:33,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:33,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:33,300 INFO L87 Difference]: Start difference. First operand 3593 states and 4105 transitions. Second operand 7 states. [2020-09-24 19:25:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:35,693 INFO L93 Difference]: Finished difference Result 7981 states and 9156 transitions. [2020-09-24 19:25:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:35,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-24 19:25:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:35,716 INFO L225 Difference]: With dead ends: 7981 [2020-09-24 19:25:35,716 INFO L226 Difference]: Without dead ends: 4225 [2020-09-24 19:25:35,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2020-09-24 19:25:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4167. [2020-09-24 19:25:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-09-24 19:25:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 4677 transitions. [2020-09-24 19:25:35,807 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 4677 transitions. Word has length 299 [2020-09-24 19:25:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:35,808 INFO L479 AbstractCegarLoop]: Abstraction has 4167 states and 4677 transitions. [2020-09-24 19:25:35,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 4677 transitions. [2020-09-24 19:25:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-24 19:25:35,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:35,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:35,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:35,823 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:35,823 INFO L82 PathProgramCache]: Analyzing trace with hash -39003453, now seen corresponding path program 1 times [2020-09-24 19:25:35,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:35,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030649088] [2020-09-24 19:25:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-09-24 19:25:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:25:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:25:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 19:25:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:37,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:25:37,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:37,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:37,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 19:25:37,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:25:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 19:25:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 19:25:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:25:37,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:37,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030649088] [2020-09-24 19:25:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:37,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:37,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168020420] [2020-09-24 19:25:37,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:37,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:37,702 INFO L87 Difference]: Start difference. First operand 4167 states and 4677 transitions. Second operand 8 states. [2020-09-24 19:25:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:40,457 INFO L93 Difference]: Finished difference Result 9155 states and 10290 transitions. [2020-09-24 19:25:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:40,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2020-09-24 19:25:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:40,484 INFO L225 Difference]: With dead ends: 9155 [2020-09-24 19:25:40,484 INFO L226 Difference]: Without dead ends: 4469 [2020-09-24 19:25:40,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2020-09-24 19:25:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4269. [2020-09-24 19:25:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2020-09-24 19:25:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 4691 transitions. [2020-09-24 19:25:40,592 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 4691 transitions. Word has length 305 [2020-09-24 19:25:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:40,593 INFO L479 AbstractCegarLoop]: Abstraction has 4269 states and 4691 transitions. [2020-09-24 19:25:40,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 4691 transitions. [2020-09-24 19:25:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-24 19:25:40,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:40,607 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:40,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:40,608 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:40,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1726541740, now seen corresponding path program 1 times [2020-09-24 19:25:40,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:40,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411517481] [2020-09-24 19:25:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:41,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-09-24 19:25:41,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-24 19:25:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:25:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:25:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:41,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:41,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:41,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:41,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:41,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:41,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:25:41,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:41,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:25:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:25:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:42,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:42,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:25:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:25:42,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 19:25:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 178 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 19:25:42,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411517481] [2020-09-24 19:25:42,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:42,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:42,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044517538] [2020-09-24 19:25:42,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:42,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:42,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:42,262 INFO L87 Difference]: Start difference. First operand 4269 states and 4691 transitions. Second operand 7 states.