/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:56:11,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:56:11,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:56:11,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:56:11,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:56:11,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:56:11,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:56:11,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:56:11,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:56:11,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:56:11,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:56:11,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:56:11,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:56:11,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:56:11,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:56:11,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:56:11,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:56:11,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:56:11,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:56:11,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:56:11,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:56:11,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:56:11,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:56:11,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:56:11,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:56:11,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:56:11,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:56:11,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:56:11,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:56:11,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:56:11,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:56:11,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:56:11,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:56:11,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:56:11,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:56:11,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:56:11,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:56:11,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:56:11,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:56:11,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:56:11,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:56:11,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:56:11,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:56:11,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:56:11,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:56:11,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:56:11,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:56:11,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:56:11,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:56:12,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:56:12,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:56:12,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:56:12,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:56:12,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:56:12,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:56:12,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:56:12,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:56:12,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:56:12,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:56:12,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:56:12,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:56:12,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:56:12,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:56:12,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:56:12,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:56:12,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:56:12,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:56:12,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:56:12,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:56:12,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:56:12,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:56:12,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:56:12,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:56:12,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:56:12,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:56:12,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:56:12,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:56:12,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-13 15:56:12,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d4eca43/3cf7e3d143404d6cad004f0cf6205045/FLAG219c89dd7 [2020-10-13 15:56:12,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:56:12,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/prefixsum_rec.c [2020-10-13 15:56:12,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d4eca43/3cf7e3d143404d6cad004f0cf6205045/FLAG219c89dd7 [2020-10-13 15:56:13,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86d4eca43/3cf7e3d143404d6cad004f0cf6205045 [2020-10-13 15:56:13,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:56:13,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:56:13,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:56:13,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:56:13,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:56:13,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235e1467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13, skipping insertion in model container [2020-10-13 15:56:13,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:56:13,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:56:13,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:56:13,494 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:56:13,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:56:13,628 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:56:13,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13 WrapperNode [2020-10-13 15:56:13,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:56:13,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:56:13,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:56:13,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:56:13,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... [2020-10-13 15:56:13,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:56:13,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:56:13,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:56:13,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:56:13,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2020-10-13 15:56:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2020-10-13 15:56:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 15:56:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:56:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:56:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:56:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 15:56:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:56:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:56:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:56:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:56:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:56:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:56:14,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:56:14,153 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 15:56:14,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:56:14 BoogieIcfgContainer [2020-10-13 15:56:14,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:56:14,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:56:14,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:56:14,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:56:14,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:56:13" (1/3) ... [2020-10-13 15:56:14,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a85a51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:56:14, skipping insertion in model container [2020-10-13 15:56:14,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:56:13" (2/3) ... [2020-10-13 15:56:14,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a85a51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:56:14, skipping insertion in model container [2020-10-13 15:56:14,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:56:14" (3/3) ... [2020-10-13 15:56:14,166 INFO L109 eAbstractionObserver]: Analyzing ICFG prefixsum_rec.c [2020-10-13 15:56:14,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:56:14,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:56:14,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:56:14,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:56:14,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:56:14,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:56:14,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:56:14,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:56:14,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:56:14,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:56:14,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:56:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-13 15:56:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:56:14,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:14,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:56:14,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:14,258 INFO L82 PathProgramCache]: Analyzing trace with hash -781002092, now seen corresponding path program 1 times [2020-10-13 15:56:14,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:14,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315996524] [2020-10-13 15:56:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 15:56:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:56:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2568 [2020-10-13 15:56:16,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 15:56:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:56:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:17,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:17,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:17,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:56:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:17,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:17,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:17,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:56:17,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:17,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:17,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 15:56:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 15:56:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:56:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 15:56:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:56:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 15:56:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:56:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:56:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:56:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 15:56:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 15:56:17,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315996524] [2020-10-13 15:56:17,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:56:17,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:56:17,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776515680] [2020-10-13 15:56:17,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:56:17,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:56:17,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:56:17,177 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-13 15:56:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:17,405 INFO L93 Difference]: Finished difference Result 122 states and 156 transitions. [2020-10-13 15:56:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:56:17,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 15:56:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:17,417 INFO L225 Difference]: With dead ends: 122 [2020-10-13 15:56:17,417 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 15:56:17,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:56:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 15:56:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 15:56:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 15:56:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-13 15:56:17,474 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 54 [2020-10-13 15:56:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:17,475 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-13 15:56:17,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:56:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-13 15:56:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:56:17,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:17,482 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:56:17,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:56:17,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:17,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:17,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1096712688, now seen corresponding path program 1 times [2020-10-13 15:56:17,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:17,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673575869] [2020-10-13 15:56:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 15:56:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:56:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:56:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 15:56:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:56:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:56:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:22,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:22,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:22,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:22,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:22,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:56:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:22,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 15:56:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:56:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:56:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:56:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 15:56:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 15:56:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:56:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 15:56:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:22,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:56:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 15:56:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:22,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:56:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:56:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 15:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 15:56:22,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673575869] [2020-10-13 15:56:22,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:56:22,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:56:22,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276167707] [2020-10-13 15:56:22,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:56:22,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:22,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:56:22,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:56:22,888 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 10 states. [2020-10-13 15:56:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:23,474 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2020-10-13 15:56:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:56:23,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-13 15:56:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:23,477 INFO L225 Difference]: With dead ends: 102 [2020-10-13 15:56:23,477 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 15:56:23,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-13 15:56:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 15:56:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-13 15:56:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 15:56:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-13 15:56:23,491 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 54 [2020-10-13 15:56:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:23,493 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-13 15:56:23,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:56:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-13 15:56:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:56:23,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:23,497 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:56:23,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:56:23,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash 377066496, now seen corresponding path program 1 times [2020-10-13 15:56:23,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:23,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404137627] [2020-10-13 15:56:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:56:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:56:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:56:28,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 15:56:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:56:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:28,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:56:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:56:28,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:56:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:56:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:28,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:56:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:28,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 15:56:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:28,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:56:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 15:56:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:28,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:28,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:28,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:28,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:56:28,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404137627] [2020-10-13 15:56:28,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:56:28,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:56:28,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782112039] [2020-10-13 15:56:28,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:56:28,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:28,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:56:28,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:56:28,703 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 8 states. [2020-10-13 15:56:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:29,074 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-13 15:56:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:56:29,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-13 15:56:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:29,076 INFO L225 Difference]: With dead ends: 77 [2020-10-13 15:56:29,077 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 15:56:29,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:56:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 15:56:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-13 15:56:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 15:56:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-13 15:56:29,088 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 55 [2020-10-13 15:56:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:29,089 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-13 15:56:29,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:56:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-13 15:56:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:56:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:29,091 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 15:56:29,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:56:29,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 728151522, now seen corresponding path program 1 times [2020-10-13 15:56:29,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:29,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975263185] [2020-10-13 15:56:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:56:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:56:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:56:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:56:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:56:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:56:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:34,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:56:34,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 15:56:34,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:56:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:56:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:56:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:34,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:56:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:34,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:34,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:56:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:56:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:56:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:56:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:56:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:56:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 15:56:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:34,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 15:56:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 15:56:34,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975263185] [2020-10-13 15:56:34,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:34,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:56:34,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980181481] [2020-10-13 15:56:34,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:56:34,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:34,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:56:34,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:56:34,348 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 10 states. [2020-10-13 15:56:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:34,885 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2020-10-13 15:56:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:56:34,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 15:56:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:34,887 INFO L225 Difference]: With dead ends: 90 [2020-10-13 15:56:34,887 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 15:56:34,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-13 15:56:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 15:56:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 15:56:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 15:56:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-13 15:56:34,898 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 57 [2020-10-13 15:56:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:34,899 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-13 15:56:34,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:56:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-13 15:56:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:56:34,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:34,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:34,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:56:34,901 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1181554876, now seen corresponding path program 2 times [2020-10-13 15:56:34,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:34,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296782590] [2020-10-13 15:56:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:35,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:36,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:39,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:39,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:56:39,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:56:39,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:56:39,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 15:56:39,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 15:56:39,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:56:39,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:40,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:40,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:56:40,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:40,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:56:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:40,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:40,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:56:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:40,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:56:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 15:56:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 15:56:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:40,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:40,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:40,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:56:40,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:56:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:56:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:56:40,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296782590] [2020-10-13 15:56:40,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:40,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 15:56:40,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51619078] [2020-10-13 15:56:40,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 15:56:40,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:40,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 15:56:40,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 15:56:40,441 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 17 states. [2020-10-13 15:56:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:41,531 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2020-10-13 15:56:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 15:56:41,532 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-10-13 15:56:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:41,537 INFO L225 Difference]: With dead ends: 86 [2020-10-13 15:56:41,538 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 15:56:41,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2020-10-13 15:56:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 15:56:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-10-13 15:56:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 15:56:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-13 15:56:41,564 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 59 [2020-10-13 15:56:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:41,564 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-13 15:56:41,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 15:56:41,564 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-13 15:56:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 15:56:41,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:41,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:56:41,570 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1836599334, now seen corresponding path program 3 times [2020-10-13 15:56:41,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:41,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404575204] [2020-10-13 15:56:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 15:56:46,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:56:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:56:46,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:56:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 15:56:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:56:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:46,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:46,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:46,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:46,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:56:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:56:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:56:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:56:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:46,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:56:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:46,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:56:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:56:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:56:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:56:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 15:56:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 15:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:56:46,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404575204] [2020-10-13 15:56:46,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:46,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:56:46,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119974317] [2020-10-13 15:56:46,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:56:46,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:56:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:56:46,764 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 10 states. [2020-10-13 15:56:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:47,246 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2020-10-13 15:56:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:56:47,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-13 15:56:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:47,248 INFO L225 Difference]: With dead ends: 102 [2020-10-13 15:56:47,248 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 15:56:47,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:56:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 15:56:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 15:56:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 15:56:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-13 15:56:47,261 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 61 [2020-10-13 15:56:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:47,262 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-13 15:56:47,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:56:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-13 15:56:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:56:47,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:47,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:47,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:56:47,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1041031769, now seen corresponding path program 1 times [2020-10-13 15:56:47,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:47,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599294446] [2020-10-13 15:56:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 15:56:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 15:56:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 15:56:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:53,113 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 28 [2020-10-13 15:56:53,676 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2020-10-13 15:56:54,213 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 25 [2020-10-13 15:56:54,552 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 17 [2020-10-13 15:56:55,108 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 28 [2020-10-13 15:56:55,649 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 40 [2020-10-13 15:56:57,166 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 164 DAG size of output: 51 [2020-10-13 15:56:57,680 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 38 [2020-10-13 15:56:58,111 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 48 [2020-10-13 15:56:58,524 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 45 [2020-10-13 15:56:58,868 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-10-13 15:56:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:59,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:59,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:59,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:56:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:56:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:56:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:59,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:56:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:59,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:56:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 15:56:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:56:59,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 15:56:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 15:56:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:56:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:56:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 15:56:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:59,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 15:56:59,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:56:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:56:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:00,338 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-13 15:57:00,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 15:57:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:00,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:00,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:00,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:57:00,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 15:57:00,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599294446] [2020-10-13 15:57:00,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:00,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 15:57:00,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867711688] [2020-10-13 15:57:00,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 15:57:00,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 15:57:00,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-10-13 15:57:00,432 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 27 states. [2020-10-13 15:57:02,034 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-13 15:57:02,611 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-13 15:57:03,768 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 15:57:04,338 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 15:57:05,201 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-13 15:57:05,706 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-13 15:57:06,372 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-13 15:57:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:07,082 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-10-13 15:57:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 15:57:07,083 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 67 [2020-10-13 15:57:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:07,085 INFO L225 Difference]: With dead ends: 104 [2020-10-13 15:57:07,085 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 15:57:07,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=269, Invalid=2083, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 15:57:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 15:57:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2020-10-13 15:57:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 15:57:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2020-10-13 15:57:07,104 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 67 [2020-10-13 15:57:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:07,104 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2020-10-13 15:57:07,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 15:57:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2020-10-13 15:57:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:57:07,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:07,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:07,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:57:07,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:07,107 INFO L82 PathProgramCache]: Analyzing trace with hash 622170276, now seen corresponding path program 1 times [2020-10-13 15:57:07,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:07,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348022299] [2020-10-13 15:57:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:07,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:57:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:57:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:12,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:12,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:12,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:12,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 15:57:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:57:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 15:57:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:57:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:57:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:12,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:57:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:12,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:12,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:12,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 15:57:12,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348022299] [2020-10-13 15:57:12,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:12,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:57:12,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171657896] [2020-10-13 15:57:12,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:57:12,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:12,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:57:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:57:12,356 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand 9 states. [2020-10-13 15:57:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:12,944 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-10-13 15:57:12,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:57:12,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-13 15:57:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:12,947 INFO L225 Difference]: With dead ends: 103 [2020-10-13 15:57:12,947 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 15:57:12,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:57:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 15:57:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-13 15:57:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 15:57:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2020-10-13 15:57:12,965 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 69 [2020-10-13 15:57:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:12,966 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2020-10-13 15:57:12,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:57:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2020-10-13 15:57:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:57:12,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:12,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 15:57:12,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:57:12,968 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:12,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1804437012, now seen corresponding path program 1 times [2020-10-13 15:57:12,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:12,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469132553] [2020-10-13 15:57:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:17,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:17,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:57:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:18,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:18,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:57:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:57:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:57:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:57:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:18,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:57:18,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:57:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:57:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:18,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:18,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 15:57:18,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469132553] [2020-10-13 15:57:18,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:18,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:57:18,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324901597] [2020-10-13 15:57:18,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:57:18,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:18,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:57:18,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:57:18,202 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand 9 states. [2020-10-13 15:57:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:18,814 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-10-13 15:57:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:57:18,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-13 15:57:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:18,822 INFO L225 Difference]: With dead ends: 109 [2020-10-13 15:57:18,822 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 15:57:18,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:57:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 15:57:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-13 15:57:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 15:57:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-10-13 15:57:18,836 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 73 [2020-10-13 15:57:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:18,837 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-10-13 15:57:18,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:57:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-10-13 15:57:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 15:57:18,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:18,838 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:18,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:57:18,839 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1311226446, now seen corresponding path program 1 times [2020-10-13 15:57:18,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:18,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251283228] [2020-10-13 15:57:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:19,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:57:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:23,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:23,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:23,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:23,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:23,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 15:57:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:57:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 15:57:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:57:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:57:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:23,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:57:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:23,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:57:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:57:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 15:57:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:24,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:24,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:24,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:24,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:57:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 15:57:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-13 15:57:24,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251283228] [2020-10-13 15:57:24,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:24,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:57:24,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807403709] [2020-10-13 15:57:24,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:57:24,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:24,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:57:24,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:57:24,106 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 10 states. [2020-10-13 15:57:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:24,661 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-10-13 15:57:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:57:24,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-13 15:57:24,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:24,663 INFO L225 Difference]: With dead ends: 110 [2020-10-13 15:57:24,663 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 15:57:24,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:57:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 15:57:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 15:57:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 15:57:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-10-13 15:57:24,684 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 91 [2020-10-13 15:57:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:24,684 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-10-13 15:57:24,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:57:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-10-13 15:57:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:57:24,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:24,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:24,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:57:24,687 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1867407724, now seen corresponding path program 2 times [2020-10-13 15:57:24,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:24,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325136260] [2020-10-13 15:57:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:57:29,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:57:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:29,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:29,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:29,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:57:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:29,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:29,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:57:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:29,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:29,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:29,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:29,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:57:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:30,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:30,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 15:57:30,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 15:57:30,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:57:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:57:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:57:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:30,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:30,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:57:30,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 15:57:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:57:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:30,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:57:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:57:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:30,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:57:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 15:57:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:30,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:30,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:57:30,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:57:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-13 15:57:30,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325136260] [2020-10-13 15:57:30,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:30,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:57:30,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571139161] [2020-10-13 15:57:30,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:57:30,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:30,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:57:30,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:57:30,253 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 9 states. [2020-10-13 15:57:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:31,049 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2020-10-13 15:57:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 15:57:31,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-13 15:57:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:31,053 INFO L225 Difference]: With dead ends: 112 [2020-10-13 15:57:31,053 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 15:57:31,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:57:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 15:57:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-13 15:57:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 15:57:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2020-10-13 15:57:31,085 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 93 [2020-10-13 15:57:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:31,086 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2020-10-13 15:57:31,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:57:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2020-10-13 15:57:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:57:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:31,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:31,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:57:31,094 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:31,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1186196340, now seen corresponding path program 3 times [2020-10-13 15:57:31,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:31,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800593333] [2020-10-13 15:57:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:57:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:57:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:36,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:57:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:36,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:36,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:57:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:36,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:57:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 15:57:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:57:36,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:57:36,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:57:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:57:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:57:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:57:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:57:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:57:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:36,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:36,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:57:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:57:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 15:57:36,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800593333] [2020-10-13 15:57:36,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:36,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 15:57:36,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770024512] [2020-10-13 15:57:36,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 15:57:36,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:36,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 15:57:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:57:36,448 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand 12 states. [2020-10-13 15:57:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:37,317 INFO L93 Difference]: Finished difference Result 128 states and 154 transitions. [2020-10-13 15:57:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 15:57:37,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-10-13 15:57:37,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:37,319 INFO L225 Difference]: With dead ends: 128 [2020-10-13 15:57:37,319 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 15:57:37,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:57:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 15:57:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-13 15:57:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 15:57:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-10-13 15:57:37,333 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 83 [2020-10-13 15:57:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:37,334 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-10-13 15:57:37,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 15:57:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-10-13 15:57:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:57:37,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:37,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:37,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:57:37,336 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1424144810, now seen corresponding path program 4 times [2020-10-13 15:57:37,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:37,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521717878] [2020-10-13 15:57:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:57:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:57:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:57:42,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 15:57:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:57:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 15:57:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:57:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:57:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:57:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:57:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:57:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,918 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-10-13 15:57:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:57:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:42,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:42,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:57:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:57:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:57:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:57:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:42,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:57:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:57:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:57:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:57:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 15:57:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:57:43,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:57:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:57:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:43,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:57:43,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:57:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 15:57:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:57:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:43,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:57:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:57:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:57:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:57:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 15:57:43,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521717878] [2020-10-13 15:57:43,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:57:43,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 15:57:43,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116850150] [2020-10-13 15:57:43,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 15:57:43,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:57:43,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 15:57:43,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 15:57:43,067 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 14 states. [2020-10-13 15:57:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:57:44,363 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2020-10-13 15:57:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 15:57:44,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-13 15:57:44,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:57:44,366 INFO L225 Difference]: With dead ends: 158 [2020-10-13 15:57:44,366 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 15:57:44,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2020-10-13 15:57:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 15:57:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2020-10-13 15:57:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 15:57:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2020-10-13 15:57:44,391 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 85 [2020-10-13 15:57:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:57:44,391 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2020-10-13 15:57:44,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 15:57:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2020-10-13 15:57:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:57:44,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:57:44,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:57:44,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:57:44,397 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:57:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:57:44,397 INFO L82 PathProgramCache]: Analyzing trace with hash -88182170, now seen corresponding path program 5 times [2020-10-13 15:57:44,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:57:44,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567955142] [2020-10-13 15:57:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:57:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:57:44,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:57:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:58:39,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:58:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54821 [2020-10-13 15:58:39,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 15:58:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 15:58:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 15:58:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:58:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:39,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:58:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:58:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:58:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:58:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:58:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 15:58:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:58:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:58:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:58:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:58:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 15:58:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:39,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:58:39,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:39,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-13 15:58:39,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 15:58:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:58:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:58:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:58:40,317 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-13 15:58:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:58:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:58:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:58:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:58:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 15:58:40,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567955142] [2020-10-13 15:58:40,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:58:40,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 15:58:40,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017987448] [2020-10-13 15:58:40,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 15:58:40,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:58:40,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 15:58:40,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-10-13 15:58:40,569 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand 24 states. [2020-10-13 15:58:41,749 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 15:58:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:58:43,103 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2020-10-13 15:58:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 15:58:43,104 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 86 [2020-10-13 15:58:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:58:43,106 INFO L225 Difference]: With dead ends: 138 [2020-10-13 15:58:43,106 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 15:58:43,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 15:58:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 15:58:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2020-10-13 15:58:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 15:58:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-10-13 15:58:43,127 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 86 [2020-10-13 15:58:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:58:43,128 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-10-13 15:58:43,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 15:58:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-10-13 15:58:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:58:43,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:58:43,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:58:43,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:58:43,130 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:58:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:58:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash -392186, now seen corresponding path program 6 times [2020-10-13 15:58:43,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:58:43,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190982703] [2020-10-13 15:58:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:58:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:58:48,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:58:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:58:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:58:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:58:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:58:48,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:58:48,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:58:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:58:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:58:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 15:58:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:58:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 15:58:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:58:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:48,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:58:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:58:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:58:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:58:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:58:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:58:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:58:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:58:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:48,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:48,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:58:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 15:58:48,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190982703] [2020-10-13 15:58:48,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:58:48,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:58:48,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898161376] [2020-10-13 15:58:48,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:58:48,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:58:48,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:58:48,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:58:48,460 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 9 states. [2020-10-13 15:58:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:58:49,009 INFO L93 Difference]: Finished difference Result 148 states and 187 transitions. [2020-10-13 15:58:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 15:58:49,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 15:58:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:58:49,012 INFO L225 Difference]: With dead ends: 148 [2020-10-13 15:58:49,012 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 15:58:49,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:58:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 15:58:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-13 15:58:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 15:58:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2020-10-13 15:58:49,036 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 96 [2020-10-13 15:58:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:58:49,036 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2020-10-13 15:58:49,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:58:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2020-10-13 15:58:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:58:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:58:49,040 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:58:49,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:58:49,040 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:58:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:58:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1701089096, now seen corresponding path program 7 times [2020-10-13 15:58:49,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:58:49,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703232615] [2020-10-13 15:58:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:58:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:58:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:58:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:58:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 15:58:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:58:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 15:58:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:58:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:58:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:58:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:58:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:58:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:58:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:58:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:58:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:58:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:58:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:58:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:58:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:58:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:58:54,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:58:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:58:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:58:54,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:58:54,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 15:58:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:58:54,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:58:54,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:58:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:58:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:58:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:54,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:58:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:58:54,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:58:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:58:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:58:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:58:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:58:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:58:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:58:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-13 15:58:54,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703232615] [2020-10-13 15:58:54,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:58:54,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 15:58:54,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027160360] [2020-10-13 15:58:54,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 15:58:54,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:58:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 15:58:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:58:54,349 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand 12 states. [2020-10-13 15:58:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:58:54,965 INFO L93 Difference]: Finished difference Result 165 states and 202 transitions. [2020-10-13 15:58:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:58:54,966 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-13 15:58:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:58:54,967 INFO L225 Difference]: With dead ends: 165 [2020-10-13 15:58:54,967 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 15:58:54,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-13 15:58:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 15:58:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-13 15:58:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 15:58:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2020-10-13 15:58:54,983 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 87 [2020-10-13 15:58:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:58:54,984 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2020-10-13 15:58:54,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 15:58:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2020-10-13 15:58:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 15:58:54,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:58:54,986 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:58:54,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:58:54,987 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:58:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:58:54,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1556575590, now seen corresponding path program 8 times [2020-10-13 15:58:54,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:58:54,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320400846] [2020-10-13 15:58:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:58:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:58:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:58:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:59:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:59:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:59:00,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 15:59:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:59:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:59:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:59:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:59:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 15:59:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:59:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:59:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:59:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:59:00,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:59:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:59:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 15:59:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:59:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:59:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:59:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:59:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 15:59:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:59:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 15:59:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:59:00,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:59:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 15:59:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:59:00,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:59:00,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 15:59:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:59:00,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:59:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:59:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:59:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:59:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:59:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:59:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:59:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:59:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:59:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:59:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:59:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:59:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 15:59:00,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320400846] [2020-10-13 15:59:00,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:59:00,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 15:59:00,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555590111] [2020-10-13 15:59:00,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 15:59:00,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:59:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 15:59:00,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 15:59:00,471 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand 19 states. [2020-10-13 15:59:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:59:01,924 INFO L93 Difference]: Finished difference Result 182 states and 225 transitions. [2020-10-13 15:59:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 15:59:01,926 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-13 15:59:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:59:01,928 INFO L225 Difference]: With dead ends: 182 [2020-10-13 15:59:01,928 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 15:59:01,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 15:59:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 15:59:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2020-10-13 15:59:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 15:59:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2020-10-13 15:59:01,948 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 89 [2020-10-13 15:59:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:59:01,949 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2020-10-13 15:59:01,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 15:59:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2020-10-13 15:59:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:59:01,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:59:01,951 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:59:01,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:59:01,951 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:59:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:59:01,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1488638294, now seen corresponding path program 9 times [2020-10-13 15:59:01,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:59:01,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225805457] [2020-10-13 15:59:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:59:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:59:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking...