/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:56:06,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:56:06,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:56:06,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:56:06,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:56:06,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:56:06,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:56:06,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:56:06,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:56:06,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:56:06,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:56:06,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:56:06,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:56:06,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:56:06,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:56:06,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:56:06,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:56:06,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:56:06,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:56:06,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:56:06,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:56:06,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:56:06,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:56:06,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:56:06,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:56:06,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:56:06,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:56:06,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:56:06,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:56:06,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:56:06,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:56:06,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:56:06,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:56:06,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:56:06,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:56:06,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:56:06,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:56:06,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:56:06,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:56:06,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:56:06,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:56:06,916 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 [2020-09-25 00:56:06,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:56:06,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:56:06,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:56:06,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:56:06,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:56:06,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:56:06,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:56:06,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:56:06,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:56:06,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:56:06,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:56:06,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:56:06,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:56:06,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:56:06,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:56:06,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:56:06,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:56:06,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:56:06,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:56:06,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:56:06,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:56:06,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:56:06,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:56:06,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:56:06,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:56:06,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:56:06,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:56:06,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:56:06,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:56:06,949 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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:56:07,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:56:07,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:56:07,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:56:07,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:56:07,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:56:07,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-25 00:56:07,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a527b96f/c2d162e2dd384fa0b7b8b1f9999bb783/FLAG231367dab [2020-09-25 00:56:08,110 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:56:08,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-09-25 00:56:08,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a527b96f/c2d162e2dd384fa0b7b8b1f9999bb783/FLAG231367dab [2020-09-25 00:56:08,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a527b96f/c2d162e2dd384fa0b7b8b1f9999bb783 [2020-09-25 00:56:08,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:56:08,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:56:08,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:56:08,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:56:08,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:56:08,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ca22ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08, skipping insertion in model container [2020-09-25 00:56:08,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:56:08,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:56:08,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:56:08,742 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:56:08,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:56:08,878 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:56:08,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08 WrapperNode [2020-09-25 00:56:08,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:56:08,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:56:08,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:56:08,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:56:08,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (1/1) ... [2020-09-25 00:56:08,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:56:08,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:56:08,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:56:08,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:56:08,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (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 [2020-09-25 00:56:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:56:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:56:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:56:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:56:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 00:56:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:56:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 00:56:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:56:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:56:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:56:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:56:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:56:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:56:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:56:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:56:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:56:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:56:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:56:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 00:56:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:56:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:56:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:56:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:56:09,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:56:09,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:56:09,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:56:09 BoogieIcfgContainer [2020-09-25 00:56:09,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:56:09,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:56:09,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:56:09,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:56:09,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:56:08" (1/3) ... [2020-09-25 00:56:09,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6753c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:56:09, skipping insertion in model container [2020-09-25 00:56:09,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:08" (2/3) ... [2020-09-25 00:56:09,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6753c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:56:09, skipping insertion in model container [2020-09-25 00:56:09,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:56:09" (3/3) ... [2020-09-25 00:56:09,380 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-09-25 00:56:09,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:56:09,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:56:09,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:56:09,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:56:09,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:56:09,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:56:09,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:56:09,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:56:09,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:56:09,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:56:09,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:56:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-25 00:56:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 00:56:09,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:09,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:09,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1228919024, now seen corresponding path program 1 times [2020-09-25 00:56:09,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:09,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877699920] [2020-09-25 00:56:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 00:56:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-25 00:56:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:10,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:56:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:56:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:56:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:56:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:10,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:10,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:10,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:10,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:10,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:10,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:10,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:56:10,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:10,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:10,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:10,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:10,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:56:10,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877699920] [2020-09-25 00:56:10,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:56:10,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 00:56:10,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939043706] [2020-09-25 00:56:10,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:56:10,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:10,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:56:10,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:56:10,647 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 10 states. [2020-09-25 00:56:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:11,617 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2020-09-25 00:56:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:56:11,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-25 00:56:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:11,635 INFO L225 Difference]: With dead ends: 221 [2020-09-25 00:56:11,636 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 00:56:11,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:56:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 00:56:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2020-09-25 00:56:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 00:56:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-09-25 00:56:11,715 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 40 [2020-09-25 00:56:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:11,716 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-09-25 00:56:11,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:56:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-09-25 00:56:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:56:11,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:11,721 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:56:11,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:56:11,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:11,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:11,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2013393660, now seen corresponding path program 1 times [2020-09-25 00:56:11,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:11,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091626196] [2020-09-25 00:56:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:56:14,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:14,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-09-25 00:56:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:56:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 00:56:14,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:56:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:14,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:56:14,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:14,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:14,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:14,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:14,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:14,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:14,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:56:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 00:56:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:56:14,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:56:14,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:56:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:56:14,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091626196] [2020-09-25 00:56:14,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:56:14,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 00:56:14,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099088234] [2020-09-25 00:56:14,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:56:14,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:14,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:56:14,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:56:14,416 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 13 states. [2020-09-25 00:56:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:15,215 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 00:56:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:56:15,216 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 00:56:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:15,218 INFO L225 Difference]: With dead ends: 128 [2020-09-25 00:56:15,218 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 00:56:15,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:56:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 00:56:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-25 00:56:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 00:56:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-09-25 00:56:15,242 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 52 [2020-09-25 00:56:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:15,242 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-09-25 00:56:15,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:56:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-09-25 00:56:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 00:56:15,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:15,248 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:56:15,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:56:15,251 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:15,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1709597342, now seen corresponding path program 1 times [2020-09-25 00:56:15,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:15,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469923276] [2020-09-25 00:56:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:56:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3135 [2020-09-25 00:56:18,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:56:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 00:56:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:56:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:18,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:18,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:18,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:18,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:18,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:18,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 00:56:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:18,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:56:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:56:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:18,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:18,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:18,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 00:56:18,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469923276] [2020-09-25 00:56:18,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:18,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:56:18,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911228430] [2020-09-25 00:56:18,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:56:18,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:18,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:56:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:56:18,727 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 13 states. [2020-09-25 00:56:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:19,813 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2020-09-25 00:56:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:56:19,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-09-25 00:56:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:19,817 INFO L225 Difference]: With dead ends: 189 [2020-09-25 00:56:19,817 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 00:56:19,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-09-25 00:56:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 00:56:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2020-09-25 00:56:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 00:56:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2020-09-25 00:56:19,846 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 67 [2020-09-25 00:56:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:19,849 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2020-09-25 00:56:19,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:56:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2020-09-25 00:56:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 00:56:19,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:19,854 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:56:19,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:56:19,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:19,855 INFO L82 PathProgramCache]: Analyzing trace with hash 587834366, now seen corresponding path program 1 times [2020-09-25 00:56:19,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:19,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125097517] [2020-09-25 00:56:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:56:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:56:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:56:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:56:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 00:56:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:56:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:25,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:25,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:25,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:25,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:25,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:25,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:25,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 00:56:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:56:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:25,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:25,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:25,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:56:25,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 00:56:25,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125097517] [2020-09-25 00:56:25,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:25,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:56:25,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504445973] [2020-09-25 00:56:25,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:56:25,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:56:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:56:25,203 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand 14 states. [2020-09-25 00:56:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:26,622 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2020-09-25 00:56:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:56:26,623 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-09-25 00:56:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:26,625 INFO L225 Difference]: With dead ends: 195 [2020-09-25 00:56:26,626 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 00:56:26,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2020-09-25 00:56:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 00:56:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 155. [2020-09-25 00:56:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 00:56:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-25 00:56:26,664 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 67 [2020-09-25 00:56:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:26,665 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-25 00:56:26,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:56:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-25 00:56:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 00:56:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:26,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:26,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:56:26,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash 687369648, now seen corresponding path program 1 times [2020-09-25 00:56:26,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:26,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146798891] [2020-09-25 00:56:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:31,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:31,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 00:56:31,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:56:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:56:31,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 00:56:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:56:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:56:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:32,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:32,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:32,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:32,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:32,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:32,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:32,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 00:56:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:56:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:56:32,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 00:56:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:56:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 00:56:32,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:56:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:56:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 00:56:33,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146798891] [2020-09-25 00:56:33,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:33,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 00:56:33,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73714154] [2020-09-25 00:56:33,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 00:56:33,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 00:56:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-09-25 00:56:33,236 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand 29 states. [2020-09-25 00:56:34,621 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 00:56:34,981 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 00:56:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:37,076 INFO L93 Difference]: Finished difference Result 211 states and 235 transitions. [2020-09-25 00:56:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 00:56:37,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-09-25 00:56:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:37,080 INFO L225 Difference]: With dead ends: 211 [2020-09-25 00:56:37,080 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 00:56:37,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=485, Invalid=3055, Unknown=0, NotChecked=0, Total=3540 [2020-09-25 00:56:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 00:56:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 157. [2020-09-25 00:56:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 00:56:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-09-25 00:56:37,098 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 79 [2020-09-25 00:56:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:37,098 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-09-25 00:56:37,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 00:56:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-09-25 00:56:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 00:56:37,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:37,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:37,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:56:37,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:37,101 INFO L82 PathProgramCache]: Analyzing trace with hash -10182896, now seen corresponding path program 1 times [2020-09-25 00:56:37,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:37,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267871528] [2020-09-25 00:56:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 00:56:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:56:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 00:56:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 00:56:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:56:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:56:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:42,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:56:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:42,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:42,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 00:56:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:42,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:42,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:42,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:56:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 00:56:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:56:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:42,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:42,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:42,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:56:42,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:56:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 00:56:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:56:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 00:56:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:56:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:56:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 00:56:43,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267871528] [2020-09-25 00:56:43,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:43,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-25 00:56:43,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98118887] [2020-09-25 00:56:43,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-25 00:56:43,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-25 00:56:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-09-25 00:56:43,390 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 28 states. [2020-09-25 00:56:44,651 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-25 00:56:44,830 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-25 00:56:45,021 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-25 00:56:45,418 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-09-25 00:56:46,417 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-09-25 00:56:46,585 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-09-25 00:56:46,783 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-09-25 00:56:46,982 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-09-25 00:56:47,151 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-09-25 00:56:47,341 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-09-25 00:56:47,543 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-09-25 00:56:47,741 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-09-25 00:56:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:48,551 INFO L93 Difference]: Finished difference Result 211 states and 234 transitions. [2020-09-25 00:56:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 00:56:48,552 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 79 [2020-09-25 00:56:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:48,556 INFO L225 Difference]: With dead ends: 211 [2020-09-25 00:56:48,556 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 00:56:48,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=500, Invalid=2922, Unknown=0, NotChecked=0, Total=3422 [2020-09-25 00:56:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 00:56:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 159. [2020-09-25 00:56:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 00:56:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 176 transitions. [2020-09-25 00:56:48,573 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 176 transitions. Word has length 79 [2020-09-25 00:56:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:48,574 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 176 transitions. [2020-09-25 00:56:48,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-25 00:56:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 176 transitions. [2020-09-25 00:56:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 00:56:48,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:48,576 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 00:56:48,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:56:48,577 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1532332446, now seen corresponding path program 2 times [2020-09-25 00:56:48,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:48,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400794631] [2020-09-25 00:56:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:53,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 00:56:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:56:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 00:56:53,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-25 00:56:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:56:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 00:56:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0