/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:29:14,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:29:14,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:29:14,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:29:14,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:29:14,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:29:14,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:29:14,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:29:14,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:29:14,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:29:14,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:29:14,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:29:14,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:29:14,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:29:14,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:29:14,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:29:14,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:29:14,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:29:14,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:29:14,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:29:14,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:29:14,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:29:14,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:29:14,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:29:14,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:29:14,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:29:14,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:29:14,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:29:14,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:29:14,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:29:14,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:29:14,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:29:14,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:29:14,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:29:14,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:29:14,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:29:14,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:29:14,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:29:14,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:29:14,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:29:14,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:29:14,954 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 [2020-10-26 23:29:14,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:29:14,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:29:14,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:29:14,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:29:14,992 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:29:14,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:29:14,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:29:14,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:29:14,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:29:14,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:29:14,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:29:14,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:29:14,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:29:14,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:29:14,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:29:14,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:29:14,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:29:14,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:29:14,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:29:14,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:29:14,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:29:14,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:29:14,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:29:14,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:29:14,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:29:14,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:29:14,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:29:14,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:29:14,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:29:14,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:29:15,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:29:15,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:29:15,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:29:15,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:29:15,407 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:29:15,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label39.c [2020-10-26 23:29:15,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f8991f63/018f153e931540b4b2db5f0f9f22afc5/FLAGf47d247c6 [2020-10-26 23:29:16,318 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:29:16,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label39.c [2020-10-26 23:29:16,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f8991f63/018f153e931540b4b2db5f0f9f22afc5/FLAGf47d247c6 [2020-10-26 23:29:16,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f8991f63/018f153e931540b4b2db5f0f9f22afc5 [2020-10-26 23:29:16,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:29:16,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:29:16,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:16,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:29:16,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:29:16,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:16" (1/1) ... [2020-10-26 23:29:16,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8912c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:16, skipping insertion in model container [2020-10-26 23:29:16,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:29:16" (1/1) ... [2020-10-26 23:29:16,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:29:16,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:29:17,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:17,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:29:17,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:29:17,374 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:29:17,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17 WrapperNode [2020-10-26 23:29:17,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:29:17,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:29:17,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:29:17,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:29:17,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (1/1) ... [2020-10-26 23:29:17,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:29:17,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:29:17,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:29:17,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:29:17,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (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 [2020-10-26 23:29:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:29:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:29:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:29:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:29:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:29:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:29:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:29:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:29:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:29:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:29:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:29:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:29:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:29:19,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:29:19,096 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:29:19,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:19 BoogieIcfgContainer [2020-10-26 23:29:19,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:29:19,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:29:19,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:29:19,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:29:19,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:29:16" (1/3) ... [2020-10-26 23:29:19,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55308cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:19, skipping insertion in model container [2020-10-26 23:29:19,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:29:17" (2/3) ... [2020-10-26 23:29:19,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55308cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:29:19, skipping insertion in model container [2020-10-26 23:29:19,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:29:19" (3/3) ... [2020-10-26 23:29:19,108 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label39.c [2020-10-26 23:29:19,120 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:29:19,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:29:19,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:29:19,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:29:19,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:29:19,168 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:29:19,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:29:19,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:29:19,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:29:19,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:29:19,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:29:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:29:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 23:29:19,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:19,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:19,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1242918264, now seen corresponding path program 1 times [2020-10-26 23:29:19,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:19,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388449594] [2020-10-26 23:29:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:19,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:20,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 23:29:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-26 23:29:20,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 23:29:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 35 [2020-10-26 23:29:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:29:20,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:20,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388449594] [2020-10-26 23:29:20,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:20,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:29:20,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636999953] [2020-10-26 23:29:20,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:29:20,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:29:20,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:29:20,315 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:29:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:22,460 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:29:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:29:22,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-26 23:29:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:22,489 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:29:22,489 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:29:22,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:29:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:29:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:29:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:29:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:29:22,580 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 32 [2020-10-26 23:29:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:22,581 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:29:22,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:29:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:29:22,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 23:29:22,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:22,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:22,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:29:22,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:22,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1939889892, now seen corresponding path program 1 times [2020-10-26 23:29:22,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:22,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88361487] [2020-10-26 23:29:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:29:23,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-26 23:29:23,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:23,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:29:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:23,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:29:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:23,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:29:23,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:23,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:29:23,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:29:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:24,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88361487] [2020-10-26 23:29:24,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:24,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:29:24,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184276585] [2020-10-26 23:29:24,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:24,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:24,136 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 8 states. [2020-10-26 23:29:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:27,578 INFO L93 Difference]: Finished difference Result 1506 states and 2264 transitions. [2020-10-26 23:29:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:29:27,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-26 23:29:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:27,594 INFO L225 Difference]: With dead ends: 1506 [2020-10-26 23:29:27,596 INFO L226 Difference]: Without dead ends: 1135 [2020-10-26 23:29:27,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:29:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-26 23:29:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1123. [2020-10-26 23:29:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:29:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1580 transitions. [2020-10-26 23:29:27,685 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1580 transitions. Word has length 101 [2020-10-26 23:29:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:27,686 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1580 transitions. [2020-10-26 23:29:27,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1580 transitions. [2020-10-26 23:29:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 23:29:27,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:27,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:27,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:29:27,689 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1595711964, now seen corresponding path program 1 times [2020-10-26 23:29:27,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:27,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003837168] [2020-10-26 23:29:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:29:28,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-26 23:29:28,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:29:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:29:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:29:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:29:28,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:29:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:28,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003837168] [2020-10-26 23:29:28,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:28,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:29:28,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191031742] [2020-10-26 23:29:28,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:28,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:28,684 INFO L87 Difference]: Start difference. First operand 1123 states and 1580 transitions. Second operand 7 states. [2020-10-26 23:29:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:31,212 INFO L93 Difference]: Finished difference Result 3221 states and 4681 transitions. [2020-10-26 23:29:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:31,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-26 23:29:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:31,228 INFO L225 Difference]: With dead ends: 3221 [2020-10-26 23:29:31,229 INFO L226 Difference]: Without dead ends: 2104 [2020-10-26 23:29:31,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-10-26 23:29:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1885. [2020-10-26 23:29:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-26 23:29:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2504 transitions. [2020-10-26 23:29:31,332 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2504 transitions. Word has length 104 [2020-10-26 23:29:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:31,333 INFO L481 AbstractCegarLoop]: Abstraction has 1885 states and 2504 transitions. [2020-10-26 23:29:31,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2504 transitions. [2020-10-26 23:29:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-26 23:29:31,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:31,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:31,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:29:31,335 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1368200484, now seen corresponding path program 1 times [2020-10-26 23:29:31,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:31,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54214382] [2020-10-26 23:29:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:29:32,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-26 23:29:32,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:29:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:32,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:32,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:29:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:33,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54214382] [2020-10-26 23:29:33,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:29:33,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:29:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274935140] [2020-10-26 23:29:33,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:33,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:33,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:33,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:33,011 INFO L87 Difference]: Start difference. First operand 1885 states and 2504 transitions. Second operand 7 states. [2020-10-26 23:29:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:35,081 INFO L93 Difference]: Finished difference Result 3794 states and 5131 transitions. [2020-10-26 23:29:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:29:35,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-26 23:29:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:35,108 INFO L225 Difference]: With dead ends: 3794 [2020-10-26 23:29:35,108 INFO L226 Difference]: Without dead ends: 2097 [2020-10-26 23:29:35,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:29:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2020-10-26 23:29:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2083. [2020-10-26 23:29:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-26 23:29:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2725 transitions. [2020-10-26 23:29:35,228 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2725 transitions. Word has length 105 [2020-10-26 23:29:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:35,228 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2725 transitions. [2020-10-26 23:29:35,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2725 transitions. [2020-10-26 23:29:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 23:29:35,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:35,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:35,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:29:35,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:35,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1803515708, now seen corresponding path program 1 times [2020-10-26 23:29:35,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:35,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362903290] [2020-10-26 23:29:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:35,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:29:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 23:29:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:29:35,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:29:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:29:35,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362903290] [2020-10-26 23:29:35,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:35,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:29:35,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787556887] [2020-10-26 23:29:35,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:29:35,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:29:35,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:29:35,722 INFO L87 Difference]: Start difference. First operand 2083 states and 2725 transitions. Second operand 5 states. [2020-10-26 23:29:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:37,681 INFO L93 Difference]: Finished difference Result 4716 states and 6339 transitions. [2020-10-26 23:29:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:29:37,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-26 23:29:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:37,701 INFO L225 Difference]: With dead ends: 4716 [2020-10-26 23:29:37,701 INFO L226 Difference]: Without dead ends: 2821 [2020-10-26 23:29:37,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:29:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2020-10-26 23:29:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2267. [2020-10-26 23:29:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2267 states. [2020-10-26 23:29:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 2880 transitions. [2020-10-26 23:29:37,803 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 2880 transitions. Word has length 116 [2020-10-26 23:29:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:37,804 INFO L481 AbstractCegarLoop]: Abstraction has 2267 states and 2880 transitions. [2020-10-26 23:29:37,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:29:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 2880 transitions. [2020-10-26 23:29:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-26 23:29:37,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:37,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:37,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:29:37,815 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash 539847164, now seen corresponding path program 1 times [2020-10-26 23:29:37,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:37,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713280682] [2020-10-26 23:29:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-26 23:29:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:29:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-26 23:29:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:29:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:29:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:40,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:29:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:29:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 49 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:29:40,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713280682] [2020-10-26 23:29:40,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:40,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:40,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096819299] [2020-10-26 23:29:40,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:40,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:40,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:40,686 INFO L87 Difference]: Start difference. First operand 2267 states and 2880 transitions. Second operand 8 states. [2020-10-26 23:29:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:42,767 INFO L93 Difference]: Finished difference Result 4763 states and 6065 transitions. [2020-10-26 23:29:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:42,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-26 23:29:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:42,780 INFO L225 Difference]: With dead ends: 4763 [2020-10-26 23:29:42,780 INFO L226 Difference]: Without dead ends: 2298 [2020-10-26 23:29:42,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:29:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2020-10-26 23:29:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2257. [2020-10-26 23:29:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-26 23:29:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2627 transitions. [2020-10-26 23:29:42,865 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2627 transitions. Word has length 199 [2020-10-26 23:29:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:42,865 INFO L481 AbstractCegarLoop]: Abstraction has 2257 states and 2627 transitions. [2020-10-26 23:29:42,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2627 transitions. [2020-10-26 23:29:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-26 23:29:42,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:42,875 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:42,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:29:42,875 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:42,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:42,877 INFO L82 PathProgramCache]: Analyzing trace with hash 180475128, now seen corresponding path program 1 times [2020-10-26 23:29:42,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:42,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576092151] [2020-10-26 23:29:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:47,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:47,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:29:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:29:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:48,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:29:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:48,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:29:48,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:29:48,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:29:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:29:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:48,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:29:48,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 425 proven. 82 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:29:49,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576092151] [2020-10-26 23:29:49,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:49,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:49,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812768970] [2020-10-26 23:29:49,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:49,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:49,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:49,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:49,253 INFO L87 Difference]: Start difference. First operand 2257 states and 2627 transitions. Second operand 8 states. [2020-10-26 23:29:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:51,486 INFO L93 Difference]: Finished difference Result 5652 states and 6773 transitions. [2020-10-26 23:29:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:29:51,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 418 [2020-10-26 23:29:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:51,505 INFO L225 Difference]: With dead ends: 5652 [2020-10-26 23:29:51,506 INFO L226 Difference]: Without dead ends: 3207 [2020-10-26 23:29:51,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:29:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2020-10-26 23:29:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3185. [2020-10-26 23:29:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-26 23:29:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3563 transitions. [2020-10-26 23:29:51,600 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3563 transitions. Word has length 418 [2020-10-26 23:29:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:51,601 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 3563 transitions. [2020-10-26 23:29:51,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:29:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3563 transitions. [2020-10-26 23:29:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-26 23:29:51,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:51,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:51,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:29:51,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash -408833224, now seen corresponding path program 1 times [2020-10-26 23:29:51,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:51,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542371188] [2020-10-26 23:29:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:56,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:29:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:29:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:56,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:56,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:29:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:29:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:29:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 23:29:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-26 23:29:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:58,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:29:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 105 proven. 397 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 23:29:58,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542371188] [2020-10-26 23:29:58,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:58,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:29:58,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938520160] [2020-10-26 23:29:58,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:29:58,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:29:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:29:58,859 INFO L87 Difference]: Start difference. First operand 3185 states and 3563 transitions. Second operand 8 states. [2020-10-26 23:30:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:00,719 INFO L93 Difference]: Finished difference Result 6378 states and 7145 transitions. [2020-10-26 23:30:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:00,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-26 23:30:00,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:00,738 INFO L225 Difference]: With dead ends: 6378 [2020-10-26 23:30:00,738 INFO L226 Difference]: Without dead ends: 3381 [2020-10-26 23:30:00,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2020-10-26 23:30:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3369. [2020-10-26 23:30:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2020-10-26 23:30:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 3750 transitions. [2020-10-26 23:30:00,839 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 3750 transitions. Word has length 431 [2020-10-26 23:30:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:00,840 INFO L481 AbstractCegarLoop]: Abstraction has 3369 states and 3750 transitions. [2020-10-26 23:30:00,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 3750 transitions. [2020-10-26 23:30:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2020-10-26 23:30:00,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:00,856 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:00,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:30:00,856 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1309506932, now seen corresponding path program 1 times [2020-10-26 23:30:00,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:00,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629440420] [2020-10-26 23:30:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-26 23:30:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-26 23:30:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:06,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:06,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:30:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:30:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-26 23:30:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:06,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 354 proven. 152 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2020-10-26 23:30:07,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629440420] [2020-10-26 23:30:07,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:07,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:07,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121846199] [2020-10-26 23:30:07,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:07,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:07,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:07,467 INFO L87 Difference]: Start difference. First operand 3369 states and 3750 transitions. Second operand 7 states. [2020-10-26 23:30:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:09,280 INFO L93 Difference]: Finished difference Result 6918 states and 7770 transitions. [2020-10-26 23:30:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:09,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 584 [2020-10-26 23:30:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:09,302 INFO L225 Difference]: With dead ends: 6918 [2020-10-26 23:30:09,303 INFO L226 Difference]: Without dead ends: 3737 [2020-10-26 23:30:09,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-10-26 23:30:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3735. [2020-10-26 23:30:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2020-10-26 23:30:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 4146 transitions. [2020-10-26 23:30:09,421 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 4146 transitions. Word has length 584 [2020-10-26 23:30:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:09,422 INFO L481 AbstractCegarLoop]: Abstraction has 3735 states and 4146 transitions. [2020-10-26 23:30:09,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 4146 transitions. [2020-10-26 23:30:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-26 23:30:09,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:09,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 23:30:09,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:30:09,445 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash 357356084, now seen corresponding path program 1 times [2020-10-26 23:30:09,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:09,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634867308] [2020-10-26 23:30:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:30:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:14,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:14,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:14,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:14,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:15,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:30:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:30:15,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:30:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:30:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:30:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:15,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-26 23:30:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:15,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:15,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:15,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:30:15,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 601 proven. 405 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-26 23:30:16,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634867308] [2020-10-26 23:30:16,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:16,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:16,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110258890] [2020-10-26 23:30:16,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:16,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:16,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:16,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:16,280 INFO L87 Difference]: Start difference. First operand 3735 states and 4146 transitions. Second operand 8 states. [2020-10-26 23:30:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:18,093 INFO L93 Difference]: Finished difference Result 7484 states and 8341 transitions. [2020-10-26 23:30:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:18,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 650 [2020-10-26 23:30:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:18,114 INFO L225 Difference]: With dead ends: 7484 [2020-10-26 23:30:18,114 INFO L226 Difference]: Without dead ends: 4121 [2020-10-26 23:30:18,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2020-10-26 23:30:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4107. [2020-10-26 23:30:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2020-10-26 23:30:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 4538 transitions. [2020-10-26 23:30:18,236 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 4538 transitions. Word has length 650 [2020-10-26 23:30:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:18,237 INFO L481 AbstractCegarLoop]: Abstraction has 4107 states and 4538 transitions. [2020-10-26 23:30:18,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 4538 transitions. [2020-10-26 23:30:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-26 23:30:18,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:18,246 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:18,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:30:18,246 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2010305644, now seen corresponding path program 1 times [2020-10-26 23:30:18,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:18,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419835004] [2020-10-26 23:30:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 705 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:30:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:23,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:23,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:23,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:23,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:23,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:23,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:23,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:23,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:30:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:24,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:24,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:24,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:24,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1505 backedges. 455 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:30:24,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419835004] [2020-10-26 23:30:24,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:24,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:24,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321944581] [2020-10-26 23:30:24,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:24,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:24,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:24,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:24,342 INFO L87 Difference]: Start difference. First operand 4107 states and 4538 transitions. Second operand 7 states. [2020-10-26 23:30:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:26,143 INFO L93 Difference]: Finished difference Result 8584 states and 9593 transitions. [2020-10-26 23:30:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:26,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2020-10-26 23:30:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:26,169 INFO L225 Difference]: With dead ends: 8584 [2020-10-26 23:30:26,169 INFO L226 Difference]: Without dead ends: 4663 [2020-10-26 23:30:26,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2020-10-26 23:30:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4661. [2020-10-26 23:30:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4661 states. [2020-10-26 23:30:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 5150 transitions. [2020-10-26 23:30:26,283 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 5150 transitions. Word has length 683 [2020-10-26 23:30:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:26,284 INFO L481 AbstractCegarLoop]: Abstraction has 4661 states and 5150 transitions. [2020-10-26 23:30:26,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 5150 transitions. [2020-10-26 23:30:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-10-26 23:30:26,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:26,294 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:26,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:30:26,294 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:26,295 INFO L82 PathProgramCache]: Analyzing trace with hash -312966180, now seen corresponding path program 2 times [2020-10-26 23:30:26,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:26,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845695840] [2020-10-26 23:30:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:31,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:30:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:30:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-26 23:30:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-26 23:30:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 386 proven. 259 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2020-10-26 23:30:32,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845695840] [2020-10-26 23:30:32,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:32,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:32,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433510363] [2020-10-26 23:30:32,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:32,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:32,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:32,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:32,498 INFO L87 Difference]: Start difference. First operand 4661 states and 5150 transitions. Second operand 7 states. [2020-10-26 23:30:34,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:34,578 INFO L93 Difference]: Finished difference Result 10612 states and 11908 transitions. [2020-10-26 23:30:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:34,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 694 [2020-10-26 23:30:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:34,607 INFO L225 Difference]: With dead ends: 10612 [2020-10-26 23:30:34,607 INFO L226 Difference]: Without dead ends: 6323 [2020-10-26 23:30:34,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2020-10-26 23:30:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6141. [2020-10-26 23:30:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2020-10-26 23:30:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 6891 transitions. [2020-10-26 23:30:34,749 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 6891 transitions. Word has length 694 [2020-10-26 23:30:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:34,750 INFO L481 AbstractCegarLoop]: Abstraction has 6141 states and 6891 transitions. [2020-10-26 23:30:34,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 6891 transitions. [2020-10-26 23:30:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-26 23:30:34,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:34,759 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:34,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:30:34,759 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1665795728, now seen corresponding path program 1 times [2020-10-26 23:30:34,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:34,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694099798] [2020-10-26 23:30:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:39,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:39,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 723 [2020-10-26 23:30:39,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:30:39,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:30:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:30:39,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:30:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,106 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-26 23:30:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:40,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:30:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:30:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:30:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:30:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:41,293 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-26 23:30:41,485 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-26 23:30:41,687 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-26 23:30:41,898 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-26 23:30:42,108 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-26 23:30:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:30:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:42,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-10-26 23:30:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:42,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:42,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1505 backedges. 505 proven. 152 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2020-10-26 23:30:44,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694099798] [2020-10-26 23:30:44,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:44,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:30:44,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460134793] [2020-10-26 23:30:44,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:30:44,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:44,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:30:44,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:30:44,246 INFO L87 Difference]: Start difference. First operand 6141 states and 6891 transitions. Second operand 13 states. [2020-10-26 23:30:45,135 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-10-26 23:30:45,561 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-26 23:30:46,030 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-26 23:30:46,403 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-26 23:30:46,663 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-26 23:30:46,979 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-26 23:30:47,297 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2020-10-26 23:30:47,623 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-26 23:30:48,627 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-26 23:30:49,334 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-26 23:30:49,726 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2020-10-26 23:30:50,016 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2020-10-26 23:30:50,348 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2020-10-26 23:30:50,680 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-26 23:30:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:51,411 INFO L93 Difference]: Finished difference Result 12094 states and 13619 transitions. [2020-10-26 23:30:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:30:51,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 701 [2020-10-26 23:30:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:51,430 INFO L225 Difference]: With dead ends: 12094 [2020-10-26 23:30:51,430 INFO L226 Difference]: Without dead ends: 6200 [2020-10-26 23:30:51,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:30:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2020-10-26 23:30:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 5888. [2020-10-26 23:30:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5888 states. [2020-10-26 23:30:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5888 states to 5888 states and 6591 transitions. [2020-10-26 23:30:51,556 INFO L78 Accepts]: Start accepts. Automaton has 5888 states and 6591 transitions. Word has length 701 [2020-10-26 23:30:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:51,557 INFO L481 AbstractCegarLoop]: Abstraction has 5888 states and 6591 transitions. [2020-10-26 23:30:51,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:30:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5888 states and 6591 transitions. [2020-10-26 23:30:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-10-26 23:30:51,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:51,567 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:51,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:30:51,567 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1849437576, now seen corresponding path program 1 times [2020-10-26 23:30:51,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:51,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134149066] [2020-10-26 23:30:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:30:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:56,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:56,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:56,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:56,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:57,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:57,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:30:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:30:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 610 proven. 82 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-26 23:30:57,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134149066] [2020-10-26 23:30:57,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:57,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:57,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145092053] [2020-10-26 23:30:57,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:57,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:57,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:57,672 INFO L87 Difference]: Start difference. First operand 5888 states and 6591 transitions. Second operand 7 states. [2020-10-26 23:30:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:59,661 INFO L93 Difference]: Finished difference Result 13244 states and 15010 transitions. [2020-10-26 23:30:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:30:59,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 724 [2020-10-26 23:30:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:59,689 INFO L225 Difference]: With dead ends: 13244 [2020-10-26 23:30:59,689 INFO L226 Difference]: Without dead ends: 7728 [2020-10-26 23:30:59,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7728 states. [2020-10-26 23:30:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7728 to 6990. [2020-10-26 23:30:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6990 states. [2020-10-26 23:30:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 7876 transitions. [2020-10-26 23:30:59,883 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 7876 transitions. Word has length 724 [2020-10-26 23:30:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:59,884 INFO L481 AbstractCegarLoop]: Abstraction has 6990 states and 7876 transitions. [2020-10-26 23:30:59,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 7876 transitions. [2020-10-26 23:30:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-10-26 23:30:59,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:59,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:59,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:30:59,896 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:59,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash 562948012, now seen corresponding path program 1 times [2020-10-26 23:30:59,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:59,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815650307] [2020-10-26 23:30:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:31:05,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:05,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:31:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:31:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 558 proven. 72 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2020-10-26 23:31:06,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815650307] [2020-10-26 23:31:06,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:06,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:06,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339119826] [2020-10-26 23:31:06,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:06,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:06,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:06,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:06,050 INFO L87 Difference]: Start difference. First operand 6990 states and 7876 transitions. Second operand 7 states. [2020-10-26 23:31:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:08,728 INFO L93 Difference]: Finished difference Result 14879 states and 16831 transitions. [2020-10-26 23:31:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:08,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 782 [2020-10-26 23:31:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:08,755 INFO L225 Difference]: With dead ends: 14879 [2020-10-26 23:31:08,755 INFO L226 Difference]: Without dead ends: 8077 [2020-10-26 23:31:08,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8077 states. [2020-10-26 23:31:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8077 to 7809. [2020-10-26 23:31:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7809 states. [2020-10-26 23:31:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 8797 transitions. [2020-10-26 23:31:08,931 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 8797 transitions. Word has length 782 [2020-10-26 23:31:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:08,932 INFO L481 AbstractCegarLoop]: Abstraction has 7809 states and 8797 transitions. [2020-10-26 23:31:08,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 8797 transitions. [2020-10-26 23:31:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-26 23:31:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:08,946 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:08,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:31:08,946 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2041764188, now seen corresponding path program 1 times [2020-10-26 23:31:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958401559] [2020-10-26 23:31:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:09,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 907 [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:31:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,361 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:31:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:14,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:14,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:31:14,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:31:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:31:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:14,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:14,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:14,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:14,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:31:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-10-26 23:31:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:31:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2721 backedges. 1006 proven. 374 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2020-10-26 23:31:16,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958401559] [2020-10-26 23:31:16,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:16,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:16,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513119229] [2020-10-26 23:31:16,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:16,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:16,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:16,156 INFO L87 Difference]: Start difference. First operand 7809 states and 8797 transitions. Second operand 8 states. [2020-10-26 23:31:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:19,028 INFO L93 Difference]: Finished difference Result 15998 states and 18118 transitions. [2020-10-26 23:31:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:31:19,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 881 [2020-10-26 23:31:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:19,061 INFO L225 Difference]: With dead ends: 15998 [2020-10-26 23:31:19,061 INFO L226 Difference]: Without dead ends: 8561 [2020-10-26 23:31:19,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:31:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2020-10-26 23:31:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 8179. [2020-10-26 23:31:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2020-10-26 23:31:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 9225 transitions. [2020-10-26 23:31:19,257 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 9225 transitions. Word has length 881 [2020-10-26 23:31:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:19,257 INFO L481 AbstractCegarLoop]: Abstraction has 8179 states and 9225 transitions. [2020-10-26 23:31:19,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 9225 transitions. [2020-10-26 23:31:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2020-10-26 23:31:19,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:19,270 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:19,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:31:19,271 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1326124908, now seen corresponding path program 1 times [2020-10-26 23:31:19,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:19,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466771020] [2020-10-26 23:31:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:31:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:31:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:24,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:24,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:24,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:24,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:31:24,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:24,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:25,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:25,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:31:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:25,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:31:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:25,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:25,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:31:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:31:25,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:31:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:31:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:25,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 1288 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:31:26,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466771020] [2020-10-26 23:31:26,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:26,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:31:26,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825707173] [2020-10-26 23:31:26,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:31:26,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:26,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:31:26,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:26,731 INFO L87 Difference]: Start difference. First operand 8179 states and 9225 transitions. Second operand 10 states. [2020-10-26 23:31:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:29,706 INFO L93 Difference]: Finished difference Result 17513 states and 19928 transitions. [2020-10-26 23:31:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:31:29,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 899 [2020-10-26 23:31:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:29,738 INFO L225 Difference]: With dead ends: 17513 [2020-10-26 23:31:29,739 INFO L226 Difference]: Without dead ends: 9671 [2020-10-26 23:31:29,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:31:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2020-10-26 23:31:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 9115. [2020-10-26 23:31:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-26 23:31:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 10414 transitions. [2020-10-26 23:31:29,973 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 10414 transitions. Word has length 899 [2020-10-26 23:31:29,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:29,974 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 10414 transitions. [2020-10-26 23:31:29,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:31:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 10414 transitions. [2020-10-26 23:31:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-26 23:31:29,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:29,989 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:29,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:31:29,990 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1145985308, now seen corresponding path program 1 times [2020-10-26 23:31:29,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:29,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108595014] [2020-10-26 23:31:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:31:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:35,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:31:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:31:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 1324 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:31:37,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108595014] [2020-10-26 23:31:37,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:37,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:31:37,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858907410] [2020-10-26 23:31:37,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:31:37,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:31:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:37,155 INFO L87 Difference]: Start difference. First operand 9115 states and 10414 transitions. Second operand 10 states. [2020-10-26 23:31:39,741 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-26 23:31:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:40,023 INFO L93 Difference]: Finished difference Result 18447 states and 21092 transitions. [2020-10-26 23:31:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:31:40,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 932 [2020-10-26 23:31:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:40,055 INFO L225 Difference]: With dead ends: 18447 [2020-10-26 23:31:40,055 INFO L226 Difference]: Without dead ends: 9671 [2020-10-26 23:31:40,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:31:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9671 states. [2020-10-26 23:31:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9671 to 9115. [2020-10-26 23:31:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-26 23:31:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 10406 transitions. [2020-10-26 23:31:40,254 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 10406 transitions. Word has length 932 [2020-10-26 23:31:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:40,255 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 10406 transitions. [2020-10-26 23:31:40,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:31:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 10406 transitions. [2020-10-26 23:31:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-26 23:31:40,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:40,272 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:40,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:31:40,272 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -143470120, now seen corresponding path program 1 times [2020-10-26 23:31:40,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:40,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078409054] [2020-10-26 23:31:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 959 [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:31:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:31:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:31:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 1351 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:31:47,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078409054] [2020-10-26 23:31:47,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:47,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:31:47,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991354112] [2020-10-26 23:31:47,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:31:47,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:31:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:47,326 INFO L87 Difference]: Start difference. First operand 9115 states and 10406 transitions. Second operand 9 states. [2020-10-26 23:31:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:50,279 INFO L93 Difference]: Finished difference Result 18477 states and 21109 transitions. [2020-10-26 23:31:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:31:50,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 933 [2020-10-26 23:31:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:50,309 INFO L225 Difference]: With dead ends: 18477 [2020-10-26 23:31:50,309 INFO L226 Difference]: Without dead ends: 9697 [2020-10-26 23:31:50,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:31:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2020-10-26 23:31:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 9113. [2020-10-26 23:31:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9113 states. [2020-10-26 23:31:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 10369 transitions. [2020-10-26 23:31:50,522 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 10369 transitions. Word has length 933 [2020-10-26 23:31:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:50,524 INFO L481 AbstractCegarLoop]: Abstraction has 9113 states and 10369 transitions. [2020-10-26 23:31:50,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:31:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 10369 transitions. [2020-10-26 23:31:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-26 23:31:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:50,541 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:50,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:31:50,542 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash -726258212, now seen corresponding path program 1 times [2020-10-26 23:31:50,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:50,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169869802] [2020-10-26 23:31:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:55,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-26 23:31:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:31:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:31:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:31:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:55,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:56,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:56,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-26 23:31:56,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:31:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:31:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:56,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:31:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:31:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2766 backedges. 816 proven. 152 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2020-10-26 23:31:57,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169869802] [2020-10-26 23:31:57,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:57,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:57,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113349133] [2020-10-26 23:31:57,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:57,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:57,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:57,563 INFO L87 Difference]: Start difference. First operand 9113 states and 10369 transitions. Second operand 8 states. [2020-10-26 23:32:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:00,082 INFO L93 Difference]: Finished difference Result 17864 states and 20373 transitions. [2020-10-26 23:32:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:00,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 944 [2020-10-26 23:32:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:00,109 INFO L225 Difference]: With dead ends: 17864 [2020-10-26 23:32:00,110 INFO L226 Difference]: Without dead ends: 9123 [2020-10-26 23:32:00,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2020-10-26 23:32:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 9115. [2020-10-26 23:32:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-26 23:32:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 10367 transitions. [2020-10-26 23:32:00,311 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 10367 transitions. Word has length 944 [2020-10-26 23:32:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:00,312 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 10367 transitions. [2020-10-26 23:32:00,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 10367 transitions. [2020-10-26 23:32:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-26 23:32:00,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:00,327 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:00,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:32:00,327 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1742025172, now seen corresponding path program 1 times [2020-10-26 23:32:00,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:00,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458995844] [2020-10-26 23:32:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4945 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:32:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:05,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:32:05,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:32:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 1366 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:32:07,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458995844] [2020-10-26 23:32:07,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:07,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:32:07,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300356876] [2020-10-26 23:32:07,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:07,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:07,136 INFO L87 Difference]: Start difference. First operand 9115 states and 10367 transitions. Second operand 9 states. [2020-10-26 23:32:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:10,656 INFO L93 Difference]: Finished difference Result 18969 states and 21566 transitions. [2020-10-26 23:32:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:32:10,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 967 [2020-10-26 23:32:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:10,688 INFO L225 Difference]: With dead ends: 18969 [2020-10-26 23:32:10,688 INFO L226 Difference]: Without dead ends: 10226 [2020-10-26 23:32:10,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:32:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10226 states. [2020-10-26 23:32:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10226 to 9667. [2020-10-26 23:32:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9667 states. [2020-10-26 23:32:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9667 states to 9667 states and 10937 transitions. [2020-10-26 23:32:10,896 INFO L78 Accepts]: Start accepts. Automaton has 9667 states and 10937 transitions. Word has length 967 [2020-10-26 23:32:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:10,897 INFO L481 AbstractCegarLoop]: Abstraction has 9667 states and 10937 transitions. [2020-10-26 23:32:10,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9667 states and 10937 transitions. [2020-10-26 23:32:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-26 23:32:10,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:10,913 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:10,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:32:10,913 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:10,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1582466540, now seen corresponding path program 1 times [2020-10-26 23:32:10,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:10,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585172595] [2020-10-26 23:32:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1621 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 23:32:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:12,993 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:32:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:13,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:13,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:32:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:13,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:32:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2959 backedges. 898 proven. 30 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2020-10-26 23:32:14,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585172595] [2020-10-26 23:32:14,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:14,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:32:14,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056798283] [2020-10-26 23:32:14,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:32:14,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:14,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:32:14,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:32:14,151 INFO L87 Difference]: Start difference. First operand 9667 states and 10937 transitions. Second operand 6 states. [2020-10-26 23:32:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:15,919 INFO L93 Difference]: Finished difference Result 20462 states and 23455 transitions. [2020-10-26 23:32:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:32:15,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 999 [2020-10-26 23:32:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:15,954 INFO L225 Difference]: With dead ends: 20462 [2020-10-26 23:32:15,954 INFO L226 Difference]: Without dead ends: 11167 [2020-10-26 23:32:15,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11167 states. [2020-10-26 23:32:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11167 to 11133. [2020-10-26 23:32:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11133 states. [2020-10-26 23:32:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11133 states to 11133 states and 12700 transitions. [2020-10-26 23:32:16,195 INFO L78 Accepts]: Start accepts. Automaton has 11133 states and 12700 transitions. Word has length 999 [2020-10-26 23:32:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:16,199 INFO L481 AbstractCegarLoop]: Abstraction has 11133 states and 12700 transitions. [2020-10-26 23:32:16,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:32:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11133 states and 12700 transitions. [2020-10-26 23:32:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-26 23:32:16,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:16,217 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:16,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:32:16,217 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:16,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1566365696, now seen corresponding path program 1 times [2020-10-26 23:32:16,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:16,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892398083] [2020-10-26 23:32:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:32:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:22,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:32:22,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:32:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:22,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:22,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3017 backedges. 1131 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:32:23,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892398083] [2020-10-26 23:32:23,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:23,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:23,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669034682] [2020-10-26 23:32:23,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:23,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:23,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:23,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:23,504 INFO L87 Difference]: Start difference. First operand 11133 states and 12700 transitions. Second operand 10 states. [2020-10-26 23:32:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:26,672 INFO L93 Difference]: Finished difference Result 24151 states and 27695 transitions. [2020-10-26 23:32:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:32:26,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1018 [2020-10-26 23:32:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:26,705 INFO L225 Difference]: With dead ends: 24151 [2020-10-26 23:32:26,705 INFO L226 Difference]: Without dead ends: 13349 [2020-10-26 23:32:26,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:32:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13349 states. [2020-10-26 23:32:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13349 to 13159. [2020-10-26 23:32:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13159 states. [2020-10-26 23:32:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13159 states to 13159 states and 15047 transitions. [2020-10-26 23:32:26,980 INFO L78 Accepts]: Start accepts. Automaton has 13159 states and 15047 transitions. Word has length 1018 [2020-10-26 23:32:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:26,981 INFO L481 AbstractCegarLoop]: Abstraction has 13159 states and 15047 transitions. [2020-10-26 23:32:26,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 13159 states and 15047 transitions. [2020-10-26 23:32:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2020-10-26 23:32:27,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:27,001 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:32:27,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:32:27,001 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash -352992204, now seen corresponding path program 1 times [2020-10-26 23:32:27,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:27,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574495140] [2020-10-26 23:32:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-26 23:32:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 23:32:32,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:32:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:32,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:32:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 1053 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:32:34,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574495140] [2020-10-26 23:32:34,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:34,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:34,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455140680] [2020-10-26 23:32:34,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:34,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:34,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:34,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:34,272 INFO L87 Difference]: Start difference. First operand 13159 states and 15047 transitions. Second operand 8 states. [2020-10-26 23:32:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:36,731 INFO L93 Difference]: Finished difference Result 26136 states and 29925 transitions. [2020-10-26 23:32:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:36,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1127 [2020-10-26 23:32:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:36,757 INFO L225 Difference]: With dead ends: 26136 [2020-10-26 23:32:36,757 INFO L226 Difference]: Without dead ends: 13349 [2020-10-26 23:32:36,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:32:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13349 states. [2020-10-26 23:32:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13349 to 13343. [2020-10-26 23:32:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13343 states. [2020-10-26 23:32:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 15228 transitions. [2020-10-26 23:32:37,151 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 15228 transitions. Word has length 1127 [2020-10-26 23:32:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:37,152 INFO L481 AbstractCegarLoop]: Abstraction has 13343 states and 15228 transitions. [2020-10-26 23:32:37,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 15228 transitions. [2020-10-26 23:32:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2020-10-26 23:32:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:37,171 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:32:37,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:32:37,171 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash -356920780, now seen corresponding path program 1 times [2020-10-26 23:32:37,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891152040] [2020-10-26 23:32:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY