/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/Problem11_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:34:37,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:34:37,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:34:37,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:34:37,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:34:37,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:34:37,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:34:37,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:34:37,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:34:37,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:34:37,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:34:37,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:34:37,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:34:37,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:34:37,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:34:37,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:34:37,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:34:37,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:34:37,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:34:37,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:34:37,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:34:37,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:34:37,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:34:37,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:34:37,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:34:37,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:34:37,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:34:37,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:34:37,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:34:37,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:34:37,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:34:37,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:34:37,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:34:37,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:34:37,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:34:37,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:34:37,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:34:37,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:34:37,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:34:37,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:34:37,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:34:37,882 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 22:34:37,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:34:37,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:34:37,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:34:37,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:34:37,942 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:34:37,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:34:37,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:34:37,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:34:37,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:34:37,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:34:37,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:34:37,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:34:37,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:34:37,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:34:37,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:34:37,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:34:37,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:34:37,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:34:37,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:34:37,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:34:37,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:34:37,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:34:37,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:34:37,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:34:37,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:34:37,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:34:37,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:34:37,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:34:37,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:34:37,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:34:38,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:34:38,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:34:38,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:34:38,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:34:38,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:34:38,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-26 22:34:38,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/767bf8c49/7d510574a3f54d9bb8d2cb1d9ffdc36b/FLAG8e2cc529a [2020-10-26 22:34:39,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:34:39,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-26 22:34:39,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/767bf8c49/7d510574a3f54d9bb8d2cb1d9ffdc36b/FLAG8e2cc529a [2020-10-26 22:34:39,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/767bf8c49/7d510574a3f54d9bb8d2cb1d9ffdc36b [2020-10-26 22:34:39,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:34:39,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:34:39,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:39,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:34:39,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:34:39,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:39" (1/1) ... [2020-10-26 22:34:39,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e09aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:39, skipping insertion in model container [2020-10-26 22:34:39,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:39" (1/1) ... [2020-10-26 22:34:39,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:34:39,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:34:40,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:40,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:34:40,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:40,584 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:34:40,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40 WrapperNode [2020-10-26 22:34:40,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:40,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:34:40,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:34:40,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:34:40,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (1/1) ... [2020-10-26 22:34:40,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:34:40,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:34:40,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:34:40,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:34:40,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (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 22:34:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:34:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:34:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:34:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:34:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:34:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:34:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:34:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:34:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:34:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:34:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:34:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:34:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:34:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:34:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:34:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:34:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:34:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:34:42,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:34:42,955 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:34:42,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:42 BoogieIcfgContainer [2020-10-26 22:34:42,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:34:42,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:34:42,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:34:42,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:34:42,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:34:39" (1/3) ... [2020-10-26 22:34:42,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:42, skipping insertion in model container [2020-10-26 22:34:42,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:40" (2/3) ... [2020-10-26 22:34:42,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:42, skipping insertion in model container [2020-10-26 22:34:42,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:42" (3/3) ... [2020-10-26 22:34:42,967 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2020-10-26 22:34:42,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:34:42,985 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:34:42,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:34:43,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:34:43,029 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:34:43,030 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:34:43,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:34:43,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:34:43,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:34:43,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:34:43,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:34:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:34:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 22:34:43,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:43,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:34:43,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1347390814, now seen corresponding path program 1 times [2020-10-26 22:34:43,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:43,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274427039] [2020-10-26 22:34:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:43,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:34:43,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-26 22:34:43,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:34:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:34:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:34:44,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:44,261 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 22:34:44,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274427039] [2020-10-26 22:34:44,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:34:44,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:34:44,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676704213] [2020-10-26 22:34:44,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:34:44,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:44,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:34:44,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:34:44,291 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-26 22:34:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:34:49,151 INFO L93 Difference]: Finished difference Result 997 states and 1783 transitions. [2020-10-26 22:34:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:34:49,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-26 22:34:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:34:49,175 INFO L225 Difference]: With dead ends: 997 [2020-10-26 22:34:49,176 INFO L226 Difference]: Without dead ends: 631 [2020-10-26 22:34:49,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:34:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-26 22:34:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2020-10-26 22:34:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-26 22:34:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 865 transitions. [2020-10-26 22:34:49,297 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 865 transitions. Word has length 71 [2020-10-26 22:34:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:34:49,298 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 865 transitions. [2020-10-26 22:34:49,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:34:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 865 transitions. [2020-10-26 22:34:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 22:34:49,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:49,308 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:34:49,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:34:49,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -994792381, now seen corresponding path program 1 times [2020-10-26 22:34:49,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:49,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089023113] [2020-10-26 22:34:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:51,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 22:34:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:34:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-26 22:34:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:51,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:34:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:51,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:34:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:34:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:52,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:52,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:34:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 22:34:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:34:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:34:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:34:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:34:52,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089023113] [2020-10-26 22:34:52,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:34:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:34:52,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210968695] [2020-10-26 22:34:52,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:34:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:34:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:34:52,324 INFO L87 Difference]: Start difference. First operand 625 states and 865 transitions. Second operand 7 states. [2020-10-26 22:34:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:34:56,283 INFO L93 Difference]: Finished difference Result 1936 states and 2867 transitions. [2020-10-26 22:34:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:34:56,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-26 22:34:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:34:56,308 INFO L225 Difference]: With dead ends: 1936 [2020-10-26 22:34:56,309 INFO L226 Difference]: Without dead ends: 1317 [2020-10-26 22:34:56,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:34:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-26 22:34:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1216. [2020-10-26 22:34:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-26 22:34:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1584 transitions. [2020-10-26 22:34:56,406 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1584 transitions. Word has length 143 [2020-10-26 22:34:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:34:56,407 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1584 transitions. [2020-10-26 22:34:56,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:34:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1584 transitions. [2020-10-26 22:34:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-26 22:34:56,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:56,411 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:34:56,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:34:56,411 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1884988243, now seen corresponding path program 1 times [2020-10-26 22:34:56,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:56,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657611844] [2020-10-26 22:34:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:58,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:34:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:34:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:58,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:34:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:59,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:34:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:34:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:34:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:34:59,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657611844] [2020-10-26 22:34:59,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:34:59,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:34:59,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753533850] [2020-10-26 22:34:59,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:34:59,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:59,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:34:59,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:34:59,232 INFO L87 Difference]: Start difference. First operand 1216 states and 1584 transitions. Second operand 7 states. [2020-10-26 22:35:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:03,383 INFO L93 Difference]: Finished difference Result 3426 states and 4548 transitions. [2020-10-26 22:35:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:03,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-26 22:35:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:03,399 INFO L225 Difference]: With dead ends: 3426 [2020-10-26 22:35:03,399 INFO L226 Difference]: Without dead ends: 2216 [2020-10-26 22:35:03,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:35:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2020-10-26 22:35:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2200. [2020-10-26 22:35:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-26 22:35:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2734 transitions. [2020-10-26 22:35:03,479 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2734 transitions. Word has length 151 [2020-10-26 22:35:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:03,482 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 2734 transitions. [2020-10-26 22:35:03,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2734 transitions. [2020-10-26 22:35:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-26 22:35:03,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:03,491 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:03,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:35:03,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:03,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1987578934, now seen corresponding path program 1 times [2020-10-26 22:35:03,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:03,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475381430] [2020-10-26 22:35:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:03,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:03,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-26 22:35:03,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-26 22:35:03,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:35:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:35:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:04,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:04,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:04,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:35:04,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:35:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:35:04,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475381430] [2020-10-26 22:35:04,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:04,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:35:04,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148320390] [2020-10-26 22:35:04,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:35:04,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:04,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:35:04,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:04,504 INFO L87 Difference]: Start difference. First operand 2200 states and 2734 transitions. Second operand 6 states. [2020-10-26 22:35:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:08,153 INFO L93 Difference]: Finished difference Result 5990 states and 7853 transitions. [2020-10-26 22:35:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:35:08,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-26 22:35:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:08,180 INFO L225 Difference]: With dead ends: 5990 [2020-10-26 22:35:08,180 INFO L226 Difference]: Without dead ends: 4174 [2020-10-26 22:35:08,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2020-10-26 22:35:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 3956. [2020-10-26 22:35:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3956 states. [2020-10-26 22:35:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 4974 transitions. [2020-10-26 22:35:08,308 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 4974 transitions. Word has length 202 [2020-10-26 22:35:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:08,309 INFO L481 AbstractCegarLoop]: Abstraction has 3956 states and 4974 transitions. [2020-10-26 22:35:08,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:35:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 4974 transitions. [2020-10-26 22:35:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-26 22:35:08,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:08,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:35:08,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:35:08,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:08,317 INFO L82 PathProgramCache]: Analyzing trace with hash 602538702, now seen corresponding path program 1 times [2020-10-26 22:35:08,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:08,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436215196] [2020-10-26 22:35:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-26 22:35:11,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:11,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2831 [2020-10-26 22:35:11,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:35:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:35:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:11,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:35:11,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:11,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:11,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:11,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 22:35:11,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:11,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:35:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:11,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:35:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:35:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:35:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:11,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436215196] [2020-10-26 22:35:11,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:11,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:35:11,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088562660] [2020-10-26 22:35:11,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:11,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:11,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:11,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:11,993 INFO L87 Difference]: Start difference. First operand 3956 states and 4974 transitions. Second operand 8 states. [2020-10-26 22:35:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:15,526 INFO L93 Difference]: Finished difference Result 8903 states and 11557 transitions. [2020-10-26 22:35:15,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:35:15,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-26 22:35:15,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:15,564 INFO L225 Difference]: With dead ends: 8903 [2020-10-26 22:35:15,564 INFO L226 Difference]: Without dead ends: 5331 [2020-10-26 22:35:15,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:35:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2020-10-26 22:35:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 5308. [2020-10-26 22:35:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5308 states. [2020-10-26 22:35:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5308 states to 5308 states and 6897 transitions. [2020-10-26 22:35:15,785 INFO L78 Accepts]: Start accepts. Automaton has 5308 states and 6897 transitions. Word has length 259 [2020-10-26 22:35:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:15,786 INFO L481 AbstractCegarLoop]: Abstraction has 5308 states and 6897 transitions. [2020-10-26 22:35:15,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:35:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5308 states and 6897 transitions. [2020-10-26 22:35:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-26 22:35:15,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:15,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:35:15,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:35:15,794 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash 41589654, now seen corresponding path program 1 times [2020-10-26 22:35:15,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:15,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016579404] [2020-10-26 22:35:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 22:35:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:35:20,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-10-26 22:35:20,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:35:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:20,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:35:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:35:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:35:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:35:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:35:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:35:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 112 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 22:35:21,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016579404] [2020-10-26 22:35:21,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:21,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:21,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582667508] [2020-10-26 22:35:21,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:21,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:21,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:21,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:21,542 INFO L87 Difference]: Start difference. First operand 5308 states and 6897 transitions. Second operand 8 states. [2020-10-26 22:35:23,190 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-26 22:35:24,078 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 22:35:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:25,538 INFO L93 Difference]: Finished difference Result 9761 states and 12941 transitions. [2020-10-26 22:35:25,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:35:25,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-26 22:35:25,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:25,579 INFO L225 Difference]: With dead ends: 9761 [2020-10-26 22:35:25,580 INFO L226 Difference]: Without dead ends: 5417 [2020-10-26 22:35:25,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:35:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2020-10-26 22:35:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5363. [2020-10-26 22:35:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5363 states. [2020-10-26 22:35:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 7035 transitions. [2020-10-26 22:35:25,774 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 7035 transitions. Word has length 260 [2020-10-26 22:35:25,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:25,775 INFO L481 AbstractCegarLoop]: Abstraction has 5363 states and 7035 transitions. [2020-10-26 22:35:25,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:35:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 7035 transitions. [2020-10-26 22:35:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-26 22:35:25,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:25,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:25,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:35:25,782 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1153213998, now seen corresponding path program 1 times [2020-10-26 22:35:25,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:25,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238844824] [2020-10-26 22:35:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:28,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 22:35:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2542 [2020-10-26 22:35:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:35:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:35:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:28,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:28,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:35:28,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:28,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:35:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:35:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:35:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:35:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:35:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:29,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238844824] [2020-10-26 22:35:29,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:29,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:29,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700759694] [2020-10-26 22:35:29,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:29,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:29,124 INFO L87 Difference]: Start difference. First operand 5363 states and 7035 transitions. Second operand 7 states. [2020-10-26 22:35:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:32,884 INFO L93 Difference]: Finished difference Result 11884 states and 16731 transitions. [2020-10-26 22:35:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:35:32,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-26 22:35:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:32,926 INFO L225 Difference]: With dead ends: 11884 [2020-10-26 22:35:32,926 INFO L226 Difference]: Without dead ends: 6512 [2020-10-26 22:35:32,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-10-26 22:35:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 4988. [2020-10-26 22:35:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4988 states. [2020-10-26 22:35:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 6565 transitions. [2020-10-26 22:35:33,195 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 6565 transitions. Word has length 261 [2020-10-26 22:35:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:33,196 INFO L481 AbstractCegarLoop]: Abstraction has 4988 states and 6565 transitions. [2020-10-26 22:35:33,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 6565 transitions. [2020-10-26 22:35:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-26 22:35:33,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:33,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:35:33,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:35:33,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:33,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1224883934, now seen corresponding path program 1 times [2020-10-26 22:35:33,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:33,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049444721] [2020-10-26 22:35:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-26 22:35:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 22:35:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:36,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:36,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:35:36,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:35:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:35:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:35:36,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:35:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:35:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:36,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049444721] [2020-10-26 22:35:36,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:36,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:36,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33444382] [2020-10-26 22:35:36,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:36,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:36,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:36,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:36,745 INFO L87 Difference]: Start difference. First operand 4988 states and 6565 transitions. Second operand 7 states. [2020-10-26 22:35:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:40,872 INFO L93 Difference]: Finished difference Result 11875 states and 18414 transitions. [2020-10-26 22:35:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:35:40,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-26 22:35:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:40,932 INFO L225 Difference]: With dead ends: 11875 [2020-10-26 22:35:40,932 INFO L226 Difference]: Without dead ends: 6893 [2020-10-26 22:35:40,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2020-10-26 22:35:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6570. [2020-10-26 22:35:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6570 states. [2020-10-26 22:35:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 8630 transitions. [2020-10-26 22:35:41,269 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 8630 transitions. Word has length 267 [2020-10-26 22:35:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:41,270 INFO L481 AbstractCegarLoop]: Abstraction has 6570 states and 8630 transitions. [2020-10-26 22:35:41,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 8630 transitions. [2020-10-26 22:35:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 22:35:41,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:41,279 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:41,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:35:41,279 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:41,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1337539814, now seen corresponding path program 1 times [2020-10-26 22:35:41,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:41,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737803596] [2020-10-26 22:35:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:41,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-26 22:35:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:35:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-26 22:35:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:35:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 22:35:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:42,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:35:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:42,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 22:35:42,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:35:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:35:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 22:35:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:35:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:35:42,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737803596] [2020-10-26 22:35:42,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:42,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:42,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158550251] [2020-10-26 22:35:42,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:35:42,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:35:42,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:35:42,820 INFO L87 Difference]: Start difference. First operand 6570 states and 8630 transitions. Second operand 5 states. [2020-10-26 22:35:45,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:45,920 INFO L93 Difference]: Finished difference Result 14328 states and 19150 transitions. [2020-10-26 22:35:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:35:45,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-10-26 22:35:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:45,950 INFO L225 Difference]: With dead ends: 14328 [2020-10-26 22:35:45,951 INFO L226 Difference]: Without dead ends: 7764 [2020-10-26 22:35:45,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7764 states. [2020-10-26 22:35:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7764 to 7538. [2020-10-26 22:35:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7538 states. [2020-10-26 22:35:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 10121 transitions. [2020-10-26 22:35:46,246 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 10121 transitions. Word has length 271 [2020-10-26 22:35:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:46,247 INFO L481 AbstractCegarLoop]: Abstraction has 7538 states and 10121 transitions. [2020-10-26 22:35:46,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:35:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 10121 transitions. [2020-10-26 22:35:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 22:35:46,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:46,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:46,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:35:46,258 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1336217677, now seen corresponding path program 1 times [2020-10-26 22:35:46,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:46,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549132127] [2020-10-26 22:35:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:46,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-26 22:35:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-10-26 22:35:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:35:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:49,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:49,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:49,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:49,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:49,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:49,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:49,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:35:49,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:49,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:49,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:35:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:35:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:35:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:49,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549132127] [2020-10-26 22:35:49,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:49,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:49,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042025780] [2020-10-26 22:35:49,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:49,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:49,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:49,560 INFO L87 Difference]: Start difference. First operand 7538 states and 10121 transitions. Second operand 7 states. [2020-10-26 22:35:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:54,051 INFO L93 Difference]: Finished difference Result 18351 states and 25532 transitions. [2020-10-26 22:35:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:54,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-26 22:35:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:54,099 INFO L225 Difference]: With dead ends: 18351 [2020-10-26 22:35:54,100 INFO L226 Difference]: Without dead ends: 10819 [2020-10-26 22:35:54,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2020-10-26 22:35:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10425. [2020-10-26 22:35:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10425 states. [2020-10-26 22:35:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10425 states to 10425 states and 13861 transitions. [2020-10-26 22:35:54,415 INFO L78 Accepts]: Start accepts. Automaton has 10425 states and 13861 transitions. Word has length 271 [2020-10-26 22:35:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:54,415 INFO L481 AbstractCegarLoop]: Abstraction has 10425 states and 13861 transitions. [2020-10-26 22:35:54,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10425 states and 13861 transitions. [2020-10-26 22:35:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-26 22:35:54,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:54,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:35:54,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:35:54,425 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1450725838, now seen corresponding path program 1 times [2020-10-26 22:35:54,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:54,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396759980] [2020-10-26 22:35:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:55,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:55,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-26 22:35:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-26 22:35:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:35:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:35:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:55,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:55,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:55,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:35:55,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:55,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:35:55,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:35:55,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:35:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:55,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:55,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:35:55,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:35:55,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:35:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:55,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396759980] [2020-10-26 22:35:55,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:55,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:55,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550028408] [2020-10-26 22:35:55,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:55,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:55,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:55,807 INFO L87 Difference]: Start difference. First operand 10425 states and 13861 transitions. Second operand 7 states. [2020-10-26 22:35:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:59,549 INFO L93 Difference]: Finished difference Result 20859 states and 27794 transitions. [2020-10-26 22:35:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:59,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-26 22:35:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:59,583 INFO L225 Difference]: With dead ends: 20859 [2020-10-26 22:35:59,584 INFO L226 Difference]: Without dead ends: 10826 [2020-10-26 22:35:59,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:35:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10826 states. [2020-10-26 22:35:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10826 to 10811. [2020-10-26 22:35:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10811 states. [2020-10-26 22:35:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10811 states to 10811 states and 14263 transitions. [2020-10-26 22:35:59,879 INFO L78 Accepts]: Start accepts. Automaton has 10811 states and 14263 transitions. Word has length 291 [2020-10-26 22:35:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:59,880 INFO L481 AbstractCegarLoop]: Abstraction has 10811 states and 14263 transitions. [2020-10-26 22:35:59,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10811 states and 14263 transitions. [2020-10-26 22:35:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-26 22:35:59,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:59,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-10-26 22:35:59,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:35:59,891 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash -704486117, now seen corresponding path program 1 times [2020-10-26 22:35:59,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:59,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519289586] [2020-10-26 22:35:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-26 22:36:00,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:36:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:36:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:36:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:36:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:00,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:36:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:36:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:36:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:36:01,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519289586] [2020-10-26 22:36:01,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:01,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:01,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330636652] [2020-10-26 22:36:01,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:01,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:01,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:01,122 INFO L87 Difference]: Start difference. First operand 10811 states and 14263 transitions. Second operand 7 states. [2020-10-26 22:36:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:05,801 INFO L93 Difference]: Finished difference Result 23952 states and 31637 transitions. [2020-10-26 22:36:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:05,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-26 22:36:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:05,835 INFO L225 Difference]: With dead ends: 23952 [2020-10-26 22:36:05,835 INFO L226 Difference]: Without dead ends: 13533 [2020-10-26 22:36:05,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13533 states. [2020-10-26 22:36:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13533 to 12750. [2020-10-26 22:36:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12750 states. [2020-10-26 22:36:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12750 states to 12750 states and 16537 transitions. [2020-10-26 22:36:06,162 INFO L78 Accepts]: Start accepts. Automaton has 12750 states and 16537 transitions. Word has length 296 [2020-10-26 22:36:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:06,163 INFO L481 AbstractCegarLoop]: Abstraction has 12750 states and 16537 transitions. [2020-10-26 22:36:06,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 12750 states and 16537 transitions. [2020-10-26 22:36:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-26 22:36:06,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:06,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:06,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:36:06,175 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:06,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1633478736, now seen corresponding path program 1 times [2020-10-26 22:36:06,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:06,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864242143] [2020-10-26 22:36:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:36:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:06,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:06,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:06,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:36:06,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:06,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:06,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:06,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:07,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:36:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:36:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:07,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:07,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:36:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:36:07,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864242143] [2020-10-26 22:36:07,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:07,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:07,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962036960] [2020-10-26 22:36:07,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:07,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:07,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:07,451 INFO L87 Difference]: Start difference. First operand 12750 states and 16537 transitions. Second operand 7 states. [2020-10-26 22:36:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:11,752 INFO L93 Difference]: Finished difference Result 25909 states and 33749 transitions. [2020-10-26 22:36:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:36:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-26 22:36:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:11,804 INFO L225 Difference]: With dead ends: 25909 [2020-10-26 22:36:11,804 INFO L226 Difference]: Without dead ends: 13551 [2020-10-26 22:36:11,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:36:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2020-10-26 22:36:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 13318. [2020-10-26 22:36:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13318 states. [2020-10-26 22:36:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13318 states to 13318 states and 17143 transitions. [2020-10-26 22:36:12,193 INFO L78 Accepts]: Start accepts. Automaton has 13318 states and 17143 transitions. Word has length 312 [2020-10-26 22:36:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:12,194 INFO L481 AbstractCegarLoop]: Abstraction has 13318 states and 17143 transitions. [2020-10-26 22:36:12,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13318 states and 17143 transitions. [2020-10-26 22:36:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-26 22:36:12,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:12,211 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:12,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:36:12,212 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:12,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2010853473, now seen corresponding path program 1 times [2020-10-26 22:36:12,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:12,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913720792] [2020-10-26 22:36:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:13,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2750 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:36:15,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:36:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:36:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:15,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:36:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:36:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:15,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:36:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:36:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:15,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:36:15,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:36:15,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913720792] [2020-10-26 22:36:15,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:15,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:15,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590032413] [2020-10-26 22:36:15,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:36:15,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:36:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:36:15,893 INFO L87 Difference]: Start difference. First operand 13318 states and 17143 transitions. Second operand 8 states. [2020-10-26 22:36:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:21,446 INFO L93 Difference]: Finished difference Result 27629 states and 35601 transitions. [2020-10-26 22:36:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:21,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 356 [2020-10-26 22:36:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:21,485 INFO L225 Difference]: With dead ends: 27629 [2020-10-26 22:36:21,485 INFO L226 Difference]: Without dead ends: 14703 [2020-10-26 22:36:21,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:36:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14703 states. [2020-10-26 22:36:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14703 to 14656. [2020-10-26 22:36:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14656 states. [2020-10-26 22:36:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14656 states to 14656 states and 18767 transitions. [2020-10-26 22:36:21,864 INFO L78 Accepts]: Start accepts. Automaton has 14656 states and 18767 transitions. Word has length 356 [2020-10-26 22:36:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:21,864 INFO L481 AbstractCegarLoop]: Abstraction has 14656 states and 18767 transitions. [2020-10-26 22:36:21,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:36:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 14656 states and 18767 transitions. [2020-10-26 22:36:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-26 22:36:21,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:21,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:21,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:36:21,881 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1687515223, now seen corresponding path program 1 times [2020-10-26 22:36:21,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:21,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95332582] [2020-10-26 22:36:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-26 22:36:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:36:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:36:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:36:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:36:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:23,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:36:23,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95332582] [2020-10-26 22:36:23,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:36:23,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 22:36:23,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051817483] [2020-10-26 22:36:23,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:36:23,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:36:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:36:23,354 INFO L87 Difference]: Start difference. First operand 14656 states and 18767 transitions. Second operand 5 states. [2020-10-26 22:36:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:25,348 INFO L93 Difference]: Finished difference Result 28539 states and 36600 transitions. [2020-10-26 22:36:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:36:25,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-10-26 22:36:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:25,390 INFO L225 Difference]: With dead ends: 28539 [2020-10-26 22:36:25,390 INFO L226 Difference]: Without dead ends: 14275 [2020-10-26 22:36:25,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:36:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2020-10-26 22:36:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14235. [2020-10-26 22:36:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14235 states. [2020-10-26 22:36:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14235 states to 14235 states and 18110 transitions. [2020-10-26 22:36:25,741 INFO L78 Accepts]: Start accepts. Automaton has 14235 states and 18110 transitions. Word has length 361 [2020-10-26 22:36:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:25,741 INFO L481 AbstractCegarLoop]: Abstraction has 14235 states and 18110 transitions. [2020-10-26 22:36:25,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:36:25,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14235 states and 18110 transitions. [2020-10-26 22:36:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-26 22:36:25,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:25,755 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:25,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:36:25,755 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash -663423689, now seen corresponding path program 1 times [2020-10-26 22:36:25,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:25,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258670305] [2020-10-26 22:36:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:36:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:27,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:36:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:36:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:27,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:36:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:36:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:36:27,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258670305] [2020-10-26 22:36:27,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:27,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:27,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890551194] [2020-10-26 22:36:27,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:27,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:27,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:27,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:27,697 INFO L87 Difference]: Start difference. First operand 14235 states and 18110 transitions. Second operand 7 states. [2020-10-26 22:36:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:31,669 INFO L93 Difference]: Finished difference Result 29092 states and 37121 transitions. [2020-10-26 22:36:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:36:31,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-26 22:36:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:31,711 INFO L225 Difference]: With dead ends: 29092 [2020-10-26 22:36:31,711 INFO L226 Difference]: Without dead ends: 15249 [2020-10-26 22:36:31,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:36:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15249 states. [2020-10-26 22:36:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15249 to 15005. [2020-10-26 22:36:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15005 states. [2020-10-26 22:36:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15005 states to 15005 states and 18627 transitions. [2020-10-26 22:36:32,111 INFO L78 Accepts]: Start accepts. Automaton has 15005 states and 18627 transitions. Word has length 365 [2020-10-26 22:36:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:32,115 INFO L481 AbstractCegarLoop]: Abstraction has 15005 states and 18627 transitions. [2020-10-26 22:36:32,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15005 states and 18627 transitions. [2020-10-26 22:36:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-26 22:36:32,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:32,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 22:36:32,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:36:32,132 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:32,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1332685175, now seen corresponding path program 1 times [2020-10-26 22:36:32,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:32,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462748992] [2020-10-26 22:36:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:34,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 382 [2020-10-26 22:36:34,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:36:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:34,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:34,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:36:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:36:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 22:36:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:36:35,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462748992] [2020-10-26 22:36:35,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:35,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:36:35,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606238300] [2020-10-26 22:36:35,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:36:35,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:36:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:36:35,431 INFO L87 Difference]: Start difference. First operand 15005 states and 18627 transitions. Second operand 11 states. [2020-10-26 22:36:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:43,503 INFO L93 Difference]: Finished difference Result 42389 states and 55703 transitions. [2020-10-26 22:36:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 22:36:43,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 377 [2020-10-26 22:36:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:43,608 INFO L225 Difference]: With dead ends: 42389 [2020-10-26 22:36:43,608 INFO L226 Difference]: Without dead ends: 27776 [2020-10-26 22:36:43,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:36:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27776 states. [2020-10-26 22:36:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27776 to 26246. [2020-10-26 22:36:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26246 states. [2020-10-26 22:36:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26246 states to 26246 states and 32467 transitions. [2020-10-26 22:36:44,336 INFO L78 Accepts]: Start accepts. Automaton has 26246 states and 32467 transitions. Word has length 377 [2020-10-26 22:36:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:44,336 INFO L481 AbstractCegarLoop]: Abstraction has 26246 states and 32467 transitions. [2020-10-26 22:36:44,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:36:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 26246 states and 32467 transitions. [2020-10-26 22:36:44,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-26 22:36:44,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:44,361 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 22:36:44,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:36:44,362 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1666470481, now seen corresponding path program 1 times [2020-10-26 22:36:44,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:44,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720467577] [2020-10-26 22:36:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-26 22:36:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:36:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 22:36:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-26 22:36:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:49,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:36:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 22:36:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:36:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 320 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-26 22:36:51,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720467577] [2020-10-26 22:36:51,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:51,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:51,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50064808] [2020-10-26 22:36:51,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:36:51,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:51,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:36:51,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:36:51,016 INFO L87 Difference]: Start difference. First operand 26246 states and 32467 transitions. Second operand 9 states. [2020-10-26 22:36:53,280 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-26 22:36:53,633 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:36:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:55,046 INFO L93 Difference]: Finished difference Result 45376 states and 56251 transitions. [2020-10-26 22:36:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:55,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 390 [2020-10-26 22:36:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:55,096 INFO L225 Difference]: With dead ends: 45376 [2020-10-26 22:36:55,096 INFO L226 Difference]: Without dead ends: 21475 [2020-10-26 22:36:55,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:36:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21475 states. [2020-10-26 22:36:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21475 to 20075. [2020-10-26 22:36:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20075 states. [2020-10-26 22:36:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20075 states to 20075 states and 23374 transitions. [2020-10-26 22:36:55,654 INFO L78 Accepts]: Start accepts. Automaton has 20075 states and 23374 transitions. Word has length 390 [2020-10-26 22:36:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:55,655 INFO L481 AbstractCegarLoop]: Abstraction has 20075 states and 23374 transitions. [2020-10-26 22:36:55,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:36:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20075 states and 23374 transitions. [2020-10-26 22:36:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-26 22:36:55,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:55,674 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:55,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:36:55,674 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1149925717, now seen corresponding path program 1 times [2020-10-26 22:36:55,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918596334] [2020-10-26 22:36:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:57,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:36:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:36:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:57,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:36:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:36:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:36:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:36:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:57,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:36:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:36:57,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918596334] [2020-10-26 22:36:57,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:57,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:57,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205210546] [2020-10-26 22:36:57,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:57,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:57,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:57,981 INFO L87 Difference]: Start difference. First operand 20075 states and 23374 transitions. Second operand 7 states. [2020-10-26 22:36:58,777 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:37:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:02,952 INFO L93 Difference]: Finished difference Result 38054 states and 44373 transitions. [2020-10-26 22:37:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:37:02,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-26 22:37:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:02,986 INFO L225 Difference]: With dead ends: 38054 [2020-10-26 22:37:02,986 INFO L226 Difference]: Without dead ends: 19960 [2020-10-26 22:37:03,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:37:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19960 states. [2020-10-26 22:37:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19960 to 19878. [2020-10-26 22:37:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19878 states. [2020-10-26 22:37:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19878 states to 19878 states and 23036 transitions. [2020-10-26 22:37:03,410 INFO L78 Accepts]: Start accepts. Automaton has 19878 states and 23036 transitions. Word has length 392 [2020-10-26 22:37:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:03,410 INFO L481 AbstractCegarLoop]: Abstraction has 19878 states and 23036 transitions. [2020-10-26 22:37:03,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19878 states and 23036 transitions. [2020-10-26 22:37:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-26 22:37:03,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:03,425 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:37:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:37:03,425 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash 89092815, now seen corresponding path program 1 times [2020-10-26 22:37:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:03,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676272422] [2020-10-26 22:37:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 22:37:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:07,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:37:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:08,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:08,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:37:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:37:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:37:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:37:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:08,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:37:08,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 22:37:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:37:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 277 proven. 85 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-26 22:37:08,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676272422] [2020-10-26 22:37:08,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:08,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:37:08,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749738841] [2020-10-26 22:37:08,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:37:08,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:08,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:37:08,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:37:08,773 INFO L87 Difference]: Start difference. First operand 19878 states and 23036 transitions. Second operand 10 states. [2020-10-26 22:37:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:17,399 INFO L93 Difference]: Finished difference Result 46062 states and 54338 transitions. [2020-10-26 22:37:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 22:37:17,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 404 [2020-10-26 22:37:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:17,459 INFO L225 Difference]: With dead ends: 46062 [2020-10-26 22:37:17,459 INFO L226 Difference]: Without dead ends: 27959 [2020-10-26 22:37:17,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:37:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27959 states. [2020-10-26 22:37:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27959 to 26962. [2020-10-26 22:37:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26962 states. [2020-10-26 22:37:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26962 states to 26962 states and 31165 transitions. [2020-10-26 22:37:18,019 INFO L78 Accepts]: Start accepts. Automaton has 26962 states and 31165 transitions. Word has length 404 [2020-10-26 22:37:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:18,020 INFO L481 AbstractCegarLoop]: Abstraction has 26962 states and 31165 transitions. [2020-10-26 22:37:18,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:37:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 26962 states and 31165 transitions. [2020-10-26 22:37:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-26 22:37:18,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:18,039 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:37:18,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:37:18,039 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash 736561202, now seen corresponding path program 1 times [2020-10-26 22:37:18,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:18,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037270866] [2020-10-26 22:37:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2685 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 22:37:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:21,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:21,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:37:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:37:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 22:37:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:37:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:37:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 393 proven. 19 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:37:22,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037270866] [2020-10-26 22:37:22,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:22,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:22,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621045199] [2020-10-26 22:37:22,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:22,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:22,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:22,006 INFO L87 Difference]: Start difference. First operand 26962 states and 31165 transitions. Second operand 8 states. [2020-10-26 22:37:23,034 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-26 22:37:26,921 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-26 22:37:28,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:28,377 INFO L93 Difference]: Finished difference Result 62759 states and 74178 transitions. [2020-10-26 22:37:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:37:28,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 434 [2020-10-26 22:37:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:28,498 INFO L225 Difference]: With dead ends: 62759 [2020-10-26 22:37:28,499 INFO L226 Difference]: Without dead ends: 38136 [2020-10-26 22:37:28,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:37:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38136 states. [2020-10-26 22:37:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38136 to 37190. [2020-10-26 22:37:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37190 states. [2020-10-26 22:37:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37190 states to 37190 states and 42894 transitions. [2020-10-26 22:37:29,341 INFO L78 Accepts]: Start accepts. Automaton has 37190 states and 42894 transitions. Word has length 434 [2020-10-26 22:37:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:29,342 INFO L481 AbstractCegarLoop]: Abstraction has 37190 states and 42894 transitions. [2020-10-26 22:37:29,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37190 states and 42894 transitions. [2020-10-26 22:37:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-26 22:37:29,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:29,362 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:37:29,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:37:29,362 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:29,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1031245267, now seen corresponding path program 1 times [2020-10-26 22:37:29,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:29,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213281493] [2020-10-26 22:37:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-26 22:37:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:33,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:33,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:37:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:33,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 22:37:33,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:37:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:37:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:37:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-26 22:37:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:37:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 174 proven. 238 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:37:34,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213281493] [2020-10-26 22:37:34,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:34,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:37:34,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846717573] [2020-10-26 22:37:34,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:37:34,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:37:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:37:34,858 INFO L87 Difference]: Start difference. First operand 37190 states and 42894 transitions. Second operand 11 states. [2020-10-26 22:37:35,076 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-26 22:37:39,204 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-26 22:37:39,725 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-26 22:37:39,922 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 22:37:40,895 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 22:37:41,632 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-26 22:37:42,057 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-26 22:37:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:42,821 INFO L93 Difference]: Finished difference Result 40827 states and 48784 transitions. [2020-10-26 22:37:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 22:37:42,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 435 [2020-10-26 22:37:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:42,953 INFO L225 Difference]: With dead ends: 40827 [2020-10-26 22:37:42,953 INFO L226 Difference]: Without dead ends: 40624 [2020-10-26 22:37:42,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2020-10-26 22:37:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40624 states. [2020-10-26 22:37:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40624 to 39892. [2020-10-26 22:37:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39892 states. [2020-10-26 22:37:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39892 states to 39892 states and 45968 transitions. [2020-10-26 22:37:44,000 INFO L78 Accepts]: Start accepts. Automaton has 39892 states and 45968 transitions. Word has length 435 [2020-10-26 22:37:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:44,001 INFO L481 AbstractCegarLoop]: Abstraction has 39892 states and 45968 transitions. [2020-10-26 22:37:44,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:37:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 39892 states and 45968 transitions. [2020-10-26 22:37:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 22:37:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:44,022 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:44,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:37:44,023 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -862824442, now seen corresponding path program 1 times [2020-10-26 22:37:44,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:44,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791544658] [2020-10-26 22:37:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4197 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:37:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-26 22:37:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:37:48,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:37:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:48,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:37:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 22:37:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:37:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:37:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:37:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-26 22:37:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:49,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:37:49,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:37:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:37:49,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 194 proven. 283 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 22:37:49,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791544658] [2020-10-26 22:37:49,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:49,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:49,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384233030] [2020-10-26 22:37:49,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:49,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:49,615 INFO L87 Difference]: Start difference. First operand 39892 states and 45968 transitions. Second operand 8 states. [2020-10-26 22:37:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:54,248 INFO L93 Difference]: Finished difference Result 74588 states and 86089 transitions. [2020-10-26 22:37:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:37:54,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 446 [2020-10-26 22:37:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:54,354 INFO L225 Difference]: With dead ends: 74588 [2020-10-26 22:37:54,354 INFO L226 Difference]: Without dead ends: 39757 [2020-10-26 22:37:54,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:37:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39757 states. [2020-10-26 22:37:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39757 to 39692. [2020-10-26 22:37:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39692 states. [2020-10-26 22:37:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39692 states to 39692 states and 45733 transitions. [2020-10-26 22:37:55,060 INFO L78 Accepts]: Start accepts. Automaton has 39692 states and 45733 transitions. Word has length 446 [2020-10-26 22:37:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:55,061 INFO L481 AbstractCegarLoop]: Abstraction has 39692 states and 45733 transitions. [2020-10-26 22:37:55,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:55,061 INFO L276 IsEmpty]: Start isEmpty. Operand 39692 states and 45733 transitions. [2020-10-26 22:37:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-26 22:37:55,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:55,073 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:55,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:37:55,073 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1038289830, now seen corresponding path program 1 times [2020-10-26 22:37:55,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:55,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831611789] [2020-10-26 22:37:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2509 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 22:37:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:37:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:37:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:37:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:37:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:37:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-26 22:37:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:58,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:58,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:37:58,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:37:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:37:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 676 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-26 22:37:58,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831611789] [2020-10-26 22:37:58,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:58,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:37:58,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983727204] [2020-10-26 22:37:58,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:37:58,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:58,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:37:58,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:37:58,583 INFO L87 Difference]: Start difference. First operand 39692 states and 45733 transitions. Second operand 9 states. [2020-10-26 22:38:01,613 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:38:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:38:04,413 INFO L93 Difference]: Finished difference Result 72815 states and 84421 transitions. [2020-10-26 22:38:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:38:04,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 452 [2020-10-26 22:38:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:38:04,484 INFO L225 Difference]: With dead ends: 72815 [2020-10-26 22:38:04,484 INFO L226 Difference]: Without dead ends: 39686 [2020-10-26 22:38:04,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:38:04,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39686 states. [2020-10-26 22:38:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39686 to 39496. [2020-10-26 22:38:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39496 states. [2020-10-26 22:38:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39496 states to 39496 states and 45402 transitions. [2020-10-26 22:38:05,066 INFO L78 Accepts]: Start accepts. Automaton has 39496 states and 45402 transitions. Word has length 452 [2020-10-26 22:38:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:38:05,066 INFO L481 AbstractCegarLoop]: Abstraction has 39496 states and 45402 transitions. [2020-10-26 22:38:05,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:38:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 39496 states and 45402 transitions. [2020-10-26 22:38:05,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-26 22:38:05,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:38:05,081 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 22:38:05,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:38:05,081 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:38:05,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:38:05,082 INFO L82 PathProgramCache]: Analyzing trace with hash 102578819, now seen corresponding path program 1 times [2020-10-26 22:38:05,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:38:05,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17524548] [2020-10-26 22:38:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:38:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:07,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-26 22:38:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2559 [2020-10-26 22:38:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:38:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:38:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 22:38:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:07,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:07,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:07,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:38:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:38:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 22:38:08,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:38:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:38:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:38:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-26 22:38:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:08,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:38:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 480 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:38:08,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17524548] [2020-10-26 22:38:08,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:08,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:38:08,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995563074] [2020-10-26 22:38:08,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:38:08,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:38:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:38:08,918 INFO L87 Difference]: Start difference. First operand 39496 states and 45402 transitions. Second operand 8 states.