/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=DEEPEST --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/array-fpi/condn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:38:11,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:38:11,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:38:11,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:38:11,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:38:11,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:38:11,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:38:11,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:38:11,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:38:11,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:38:11,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:38:11,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:38:11,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:38:11,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:38:11,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:38:11,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:38:11,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:38:11,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:38:11,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:38:11,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:38:11,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:38:11,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:38:11,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:38:11,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:38:11,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:38:11,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:38:11,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:38:11,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:38:11,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:38:11,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:38:11,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:38:11,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:38:11,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:38:11,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:38:11,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:38:11,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:38:11,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:38:11,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:38:11,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:38:11,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:38:11,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:38:11,894 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 [2020-10-27 14:38:11,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:38:11,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:38:11,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:38:11,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:38:11,945 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:38:11,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:38:11,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:38:11,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:38:11,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:38:11,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:38:11,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:38:11,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:38:11,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:38:11,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:38:11,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:38:11,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:38:11,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:38:11,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:38:11,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:38:11,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:38:11,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:38:11,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:38:11,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:38:11,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:38:11,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:38:11,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:38:11,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:38:11,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:38:11,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:38:11,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:38:12,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:38:12,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:38:12,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:38:12,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:38:12,375 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:38:12,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condn.c [2020-10-27 14:38:12,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3128ce98/394130fe5a8b4b59ba3c5970722dee57/FLAG329bd9970 [2020-10-27 14:38:13,163 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:38:13,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condn.c [2020-10-27 14:38:13,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3128ce98/394130fe5a8b4b59ba3c5970722dee57/FLAG329bd9970 [2020-10-27 14:38:13,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3128ce98/394130fe5a8b4b59ba3c5970722dee57 [2020-10-27 14:38:13,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:38:13,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:38:13,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:13,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:38:13,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:38:13,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d41673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13, skipping insertion in model container [2020-10-27 14:38:13,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:38:13,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:38:13,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:13,881 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:38:13,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:13,937 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:38:13,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13 WrapperNode [2020-10-27 14:38:13,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:13,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:38:13,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:38:13,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:38:13,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2020-10-27 14:38:13,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:38:13,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:38:13,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:38:13,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:38:13,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:38:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:38:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:38:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:38:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:38:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:38:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:38:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:38:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:38:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:38:14,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:38:14,651 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:38:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:14 BoogieIcfgContainer [2020-10-27 14:38:14,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:38:14,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:38:14,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:38:14,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:38:14,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:38:13" (1/3) ... [2020-10-27 14:38:14,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1712a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:14, skipping insertion in model container [2020-10-27 14:38:14,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (2/3) ... [2020-10-27 14:38:14,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1712a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:14, skipping insertion in model container [2020-10-27 14:38:14,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:14" (3/3) ... [2020-10-27 14:38:14,667 INFO L111 eAbstractionObserver]: Analyzing ICFG condn.c [2020-10-27 14:38:14,684 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:38:14,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:38:14,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:38:14,752 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:38:14,752 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:38:14,752 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:38:14,752 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:38:14,752 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:38:14,753 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:38:14,753 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:38:14,753 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:38:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-27 14:38:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:38:14,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:14,787 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] [2020-10-27 14:38:14,788 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-10-27 14:38:14,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:14,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285322340] [2020-10-27 14:38:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:38:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:38:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-27 14:38:15,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:38:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:38:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:15,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:15,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:15,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:38:15,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:15,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:15,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:15,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:38:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:38:16,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285322340] [2020-10-27 14:38:16,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:38:16,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:38:16,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057144405] [2020-10-27 14:38:16,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:38:16,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:16,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:38:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:38:16,032 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-10-27 14:38:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:16,143 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-10-27 14:38:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:38:16,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-27 14:38:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:16,153 INFO L225 Difference]: With dead ends: 65 [2020-10-27 14:38:16,153 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:38:16,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:38:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:38:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-27 14:38:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:38:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-27 14:38:16,203 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-10-27 14:38:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:16,203 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-27 14:38:16,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:38:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-27 14:38:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:38:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:16,205 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] [2020-10-27 14:38:16,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:38:16,206 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:16,206 INFO L82 PathProgramCache]: Analyzing trace with hash 689239426, now seen corresponding path program 1 times [2020-10-27 14:38:16,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:16,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285713835] [2020-10-27 14:38:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:16,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:16,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:38:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:38:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-27 14:38:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:38:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:38:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:38:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 14:38:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:38:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:17,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:17,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:17,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:38:17,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285713835] [2020-10-27 14:38:17,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:38:17,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:38:17,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244090282] [2020-10-27 14:38:17,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:38:17,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:17,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:38:17,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:38:17,097 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-27 14:38:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:17,351 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-27 14:38:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:38:17,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 14:38:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:17,355 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:38:17,355 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:38:17,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:38:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:38:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-27 14:38:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:38:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-27 14:38:17,370 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-27 14:38:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:17,370 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-27 14:38:17,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:38:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-27 14:38:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:38:17,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:17,372 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] [2020-10-27 14:38:17,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:38:17,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:17,373 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-10-27 14:38:17,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:17,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638297508] [2020-10-27 14:38:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:18,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:38:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:38:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:38:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:18,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:38:18,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:38:18,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638297508] [2020-10-27 14:38:18,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:18,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:38:18,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999932777] [2020-10-27 14:38:18,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:38:18,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:18,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:38:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:38:18,244 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 10 states. [2020-10-27 14:38:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:18,772 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-27 14:38:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:38:18,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-27 14:38:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:18,775 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:38:18,776 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 14:38:18,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:38:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 14:38:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2020-10-27 14:38:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:38:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-27 14:38:18,800 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-10-27 14:38:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:18,801 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-27 14:38:18,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:38:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-27 14:38:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:38:18,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:18,803 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] [2020-10-27 14:38:18,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:38:18,804 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash 100561509, now seen corresponding path program 1 times [2020-10-27 14:38:18,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:18,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173292893] [2020-10-27 14:38:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:38:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-27 14:38:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:38:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:38:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:38:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:19,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:19,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:19,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:19,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:38:19,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173292893] [2020-10-27 14:38:19,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:19,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:38:19,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396003683] [2020-10-27 14:38:19,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:38:19,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:19,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:38:19,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:38:19,405 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 9 states. [2020-10-27 14:38:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:19,809 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:38:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:38:19,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-27 14:38:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:19,813 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:38:19,813 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:38:19,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:38:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:38:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-10-27 14:38:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:38:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-27 14:38:19,825 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 28 [2020-10-27 14:38:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:19,825 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-27 14:38:19,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:38:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-27 14:38:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:38:19,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:19,827 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:38:19,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:38:19,827 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1667586818, now seen corresponding path program 1 times [2020-10-27 14:38:19,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:19,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180653003] [2020-10-27 14:38:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:22,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:22,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:38:22,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:38:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-27 14:38:22,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:38:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:38:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:38:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:38:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:22,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:22,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:38:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:38:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:22,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:22,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:22,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:38:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:38:22,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180653003] [2020-10-27 14:38:22,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:22,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:38:22,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259773254] [2020-10-27 14:38:22,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:38:22,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:22,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:38:22,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:38:22,508 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-10-27 14:38:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:23,013 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:38:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:38:23,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-27 14:38:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:23,015 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:38:23,015 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:38:23,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:38:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:38:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2020-10-27 14:38:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:38:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:38:23,024 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 31 [2020-10-27 14:38:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:23,025 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:38:23,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:38:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:38:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:38:23,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:23,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:23,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:38:23,027 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash -590551791, now seen corresponding path program 1 times [2020-10-27 14:38:23,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:23,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974499401] [2020-10-27 14:38:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:38:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-27 14:38:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:38:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:23,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:23,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:23,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:23,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:23,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:23,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:23,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:38:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:23,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:38:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:38:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:38:23,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974499401] [2020-10-27 14:38:23,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:23,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:38:23,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082036424] [2020-10-27 14:38:23,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:38:23,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:23,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:38:23,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:38:23,867 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 8 states. [2020-10-27 14:38:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:24,170 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2020-10-27 14:38:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:38:24,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-27 14:38:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:24,172 INFO L225 Difference]: With dead ends: 89 [2020-10-27 14:38:24,172 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 14:38:24,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:38:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 14:38:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-10-27 14:38:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:38:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-27 14:38:24,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 36 [2020-10-27 14:38:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:24,186 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-27 14:38:24,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:38:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-27 14:38:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:38:24,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:24,195 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:38:24,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:38:24,195 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:24,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2146708784, now seen corresponding path program 2 times [2020-10-27 14:38:24,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:24,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085950519] [2020-10-27 14:38:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:25,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:25,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:38:25,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-27 14:38:25,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:38:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:38:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:38:25,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:38:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:25,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:38:25,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085950519] [2020-10-27 14:38:25,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:25,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:38:25,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103380984] [2020-10-27 14:38:25,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:38:25,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:25,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:38:25,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:38:25,609 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 12 states. [2020-10-27 14:38:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:26,207 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-27 14:38:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:38:26,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-27 14:38:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:26,209 INFO L225 Difference]: With dead ends: 77 [2020-10-27 14:38:26,209 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:38:26,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:38:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:38:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2020-10-27 14:38:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:38:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-27 14:38:26,233 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 41 [2020-10-27 14:38:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:26,234 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-27 14:38:26,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:38:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-27 14:38:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:38:26,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:26,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:26,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:38:26,240 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash 154113806, now seen corresponding path program 1 times [2020-10-27 14:38:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:26,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264358132] [2020-10-27 14:38:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:27,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:38:27,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:38:27,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:38:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:27,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:27,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:27,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:27,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:27,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:27,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:38:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:27,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:27,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:27,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:38:27,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264358132] [2020-10-27 14:38:27,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:27,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:38:27,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454176767] [2020-10-27 14:38:27,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:38:27,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:38:27,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:38:27,944 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 11 states. [2020-10-27 14:38:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:28,605 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-27 14:38:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:38:28,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-27 14:38:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:28,607 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:38:28,608 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:38:28,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:38:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:38:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62. [2020-10-27 14:38:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:38:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-27 14:38:28,619 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 41 [2020-10-27 14:38:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:28,620 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-27 14:38:28,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:38:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-27 14:38:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:38:28,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:28,621 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:38:28,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:38:28,622 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash 133982925, now seen corresponding path program 2 times [2020-10-27 14:38:28,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:28,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883919105] [2020-10-27 14:38:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3254 [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:38:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:38:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:32,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:32,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:32,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:32,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:32,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:32,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:32,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:32,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:38:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:38:32,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883919105] [2020-10-27 14:38:32,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:32,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:38:32,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012841638] [2020-10-27 14:38:32,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:38:32,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:38:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:38:32,186 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 13 states. [2020-10-27 14:38:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:33,064 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-27 14:38:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:38:33,067 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-27 14:38:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:33,070 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:38:33,070 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:38:33,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:38:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:38:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2020-10-27 14:38:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:38:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:38:33,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 44 [2020-10-27 14:38:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:33,093 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:38:33,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:38:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:38:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:38:33,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:33,097 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:38:33,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:38:33,097 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash 624455354, now seen corresponding path program 3 times [2020-10-27 14:38:33,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:33,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691129724] [2020-10-27 14:38:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:34,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:34,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:38:34,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:34,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-27 14:38:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:38:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:38:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:38:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:34,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:34,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:34,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:34,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:34,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:34,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:34,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:34,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:38:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:34,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:38:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 14:38:34,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691129724] [2020-10-27 14:38:34,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:34,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:38:34,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677507423] [2020-10-27 14:38:34,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:38:34,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:34,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:38:34,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:38:34,655 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 10 states. [2020-10-27 14:38:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:35,044 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-27 14:38:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:38:35,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-27 14:38:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:35,046 INFO L225 Difference]: With dead ends: 121 [2020-10-27 14:38:35,046 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:38:35,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:38:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:38:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-27 14:38:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 14:38:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-10-27 14:38:35,060 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 49 [2020-10-27 14:38:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:35,061 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-10-27 14:38:35,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:38:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-10-27 14:38:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:38:35,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:35,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:35,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:38:35,063 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1195956073, now seen corresponding path program 4 times [2020-10-27 14:38:35,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:35,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622825467] [2020-10-27 14:38:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 14:38:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:38:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:37,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:38:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:38:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:38:37,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622825467] [2020-10-27 14:38:37,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:37,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:38:37,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435109185] [2020-10-27 14:38:37,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:38:37,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:38:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:38:37,900 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 14 states. [2020-10-27 14:38:38,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:38,772 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-10-27 14:38:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:38:38,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-27 14:38:38,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:38,775 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:38:38,775 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:38:38,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:38:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:38:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2020-10-27 14:38:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 14:38:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-27 14:38:38,788 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 54 [2020-10-27 14:38:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:38,788 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-27 14:38:38,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:38:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-27 14:38:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:38:38,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:38,789 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:38:38,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:38:38,790 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:38,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:38,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1133916459, now seen corresponding path program 3 times [2020-10-27 14:38:38,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:38,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920637259] [2020-10-27 14:38:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:38:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2579 [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:38:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:41,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:41,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:38:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:41,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:41,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:41,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:38:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:41,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:41,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:38:41,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920637259] [2020-10-27 14:38:41,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:41,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:38:41,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866168416] [2020-10-27 14:38:41,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:38:41,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:38:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:38:41,653 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-27 14:38:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:42,599 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-27 14:38:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:38:42,601 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-27 14:38:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:42,602 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:38:42,603 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 14:38:42,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:38:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 14:38:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 79. [2020-10-27 14:38:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:38:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-27 14:38:42,619 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 54 [2020-10-27 14:38:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:42,620 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-27 14:38:42,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:38:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-27 14:38:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:38:42,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:42,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:42,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:38:42,622 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -897395014, now seen corresponding path program 4 times [2020-10-27 14:38:42,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:42,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033082043] [2020-10-27 14:38:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:47,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:47,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:38:47,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:38:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:38:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:38:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:47,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:38:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:48,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:38:48,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033082043] [2020-10-27 14:38:48,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:48,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:38:48,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146531976] [2020-10-27 14:38:48,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:38:48,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:38:48,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:38:48,019 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 15 states. [2020-10-27 14:38:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:49,334 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-27 14:38:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:38:49,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-27 14:38:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:49,337 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:38:49,337 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 14:38:49,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:38:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 14:38:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 65. [2020-10-27 14:38:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 14:38:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-27 14:38:49,360 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 57 [2020-10-27 14:38:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:49,360 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-27 14:38:49,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:38:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-27 14:38:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:38:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:49,362 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:49,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:38:49,362 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2096172417, now seen corresponding path program 5 times [2020-10-27 14:38:49,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:49,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030568088] [2020-10-27 14:38:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 14:38:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:38:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:38:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:38:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:51,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:38:51,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030568088] [2020-10-27 14:38:51,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:51,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:38:51,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885498511] [2020-10-27 14:38:51,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:38:51,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:38:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:38:51,254 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 12 states. [2020-10-27 14:38:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:51,779 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-10-27 14:38:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:38:51,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-27 14:38:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:51,782 INFO L225 Difference]: With dead ends: 153 [2020-10-27 14:38:51,782 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:38:51,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:38:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:38:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-10-27 14:38:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:38:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-27 14:38:51,795 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 62 [2020-10-27 14:38:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:51,796 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-27 14:38:51,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:38:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-27 14:38:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:38:51,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:51,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:51,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:38:51,797 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1620308984, now seen corresponding path program 6 times [2020-10-27 14:38:51,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:51,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352870654] [2020-10-27 14:38:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 14:38:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2926 [2020-10-27 14:38:54,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:38:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:38:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 14:38:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:55,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:55,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:55,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:38:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:38:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:38:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:38:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:38:55,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352870654] [2020-10-27 14:38:55,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:38:55,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:38:55,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119753122] [2020-10-27 14:38:55,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:38:55,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:38:55,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:38:55,079 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 16 states. [2020-10-27 14:38:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:56,176 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-10-27 14:38:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:38:56,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-27 14:38:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:56,178 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:38:56,179 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 14:38:56,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:38:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 14:38:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-10-27 14:38:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:38:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-10-27 14:38:56,195 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 67 [2020-10-27 14:38:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:56,196 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-10-27 14:38:56,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:38:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-10-27 14:38:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:38:56,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:56,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:38:56,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:38:56,197 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash 430675014, now seen corresponding path program 5 times [2020-10-27 14:38:56,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:56,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589908022] [2020-10-27 14:38:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:59,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 14:38:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:38:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3564 [2020-10-27 14:38:59,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:38:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:38:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 14:38:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:39:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:39:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:00,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:00,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:39:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:00,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:00,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:39:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:39:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:39:00,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589908022] [2020-10-27 14:39:00,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:00,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:39:00,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548891412] [2020-10-27 14:39:00,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:39:00,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:39:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:39:00,165 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 15 states. [2020-10-27 14:39:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:01,524 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-27 14:39:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:39:01,528 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-27 14:39:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:01,529 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:39:01,530 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 14:39:01,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:39:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 14:39:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-10-27 14:39:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:39:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-10-27 14:39:01,556 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 67 [2020-10-27 14:39:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:01,556 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-10-27 14:39:01,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:39:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-10-27 14:39:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:39:01,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:01,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:01,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:39:01,559 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:01,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash -477919043, now seen corresponding path program 6 times [2020-10-27 14:39:01,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:01,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827450918] [2020-10-27 14:39:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4762 [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:39:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:39:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:39:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:39:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:39:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:06,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:39:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:39:06,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827450918] [2020-10-27 14:39:06,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:06,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:39:06,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106692950] [2020-10-27 14:39:06,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:39:06,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:06,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:39:06,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:39:06,777 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 17 states. [2020-10-27 14:39:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:08,463 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-27 14:39:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:39:08,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-27 14:39:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:08,465 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:39:08,465 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 14:39:08,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:39:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 14:39:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2020-10-27 14:39:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:39:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-10-27 14:39:08,482 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 70 [2020-10-27 14:39:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:08,483 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-10-27 14:39:08,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:39:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-10-27 14:39:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:39:08,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:08,484 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:08,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:39:08,484 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:08,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1874333710, now seen corresponding path program 7 times [2020-10-27 14:39:08,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:08,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524669461] [2020-10-27 14:39:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:39:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:39:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:39:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:10,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:10,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:10,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:39:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:39:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:10,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:39:10,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:39:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:39:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:10,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:10,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:10,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:39:10,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524669461] [2020-10-27 14:39:10,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:10,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:39:10,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449122909] [2020-10-27 14:39:10,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:39:10,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:39:10,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:39:10,922 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 14 states. [2020-10-27 14:39:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:11,613 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2020-10-27 14:39:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:39:11,614 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-27 14:39:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:11,616 INFO L225 Difference]: With dead ends: 185 [2020-10-27 14:39:11,617 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 14:39:11,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:39:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 14:39:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-27 14:39:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 14:39:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-10-27 14:39:11,630 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 75 [2020-10-27 14:39:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:11,632 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-10-27 14:39:11,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:39:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-10-27 14:39:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:39:11,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:11,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:11,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:39:11,634 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:11,634 INFO L82 PathProgramCache]: Analyzing trace with hash 759253255, now seen corresponding path program 8 times [2020-10-27 14:39:11,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:11,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545650636] [2020-10-27 14:39:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:11,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3691 [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:39:15,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:39:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:39:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:15,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:39:15,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:15,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:39:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:15,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:15,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:39:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:39:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:39:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:15,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:15,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 14:39:15,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545650636] [2020-10-27 14:39:15,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:15,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:39:15,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422179389] [2020-10-27 14:39:15,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:39:15,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:15,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:39:15,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:39:15,791 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 18 states. [2020-10-27 14:39:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:17,271 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2020-10-27 14:39:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:39:17,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-27 14:39:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:17,273 INFO L225 Difference]: With dead ends: 128 [2020-10-27 14:39:17,274 INFO L226 Difference]: Without dead ends: 125 [2020-10-27 14:39:17,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:39:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-27 14:39:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2020-10-27 14:39:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:39:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2020-10-27 14:39:17,289 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 80 [2020-10-27 14:39:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:17,290 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2020-10-27 14:39:17,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:39:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2020-10-27 14:39:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:39:17,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:17,291 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:17,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:39:17,291 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:17,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399749, now seen corresponding path program 7 times [2020-10-27 14:39:17,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:17,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225508027] [2020-10-27 14:39:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:39:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:39:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:39:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:39:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:39:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:22,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:39:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:39:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:22,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:22,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 14:39:22,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225508027] [2020-10-27 14:39:22,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:22,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:39:22,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632476749] [2020-10-27 14:39:22,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:39:22,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:22,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:39:22,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:39:22,731 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand 17 states. [2020-10-27 14:39:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:24,438 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-27 14:39:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:39:24,446 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-27 14:39:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:24,449 INFO L225 Difference]: With dead ends: 160 [2020-10-27 14:39:24,449 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 14:39:24,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:39:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 14:39:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 113. [2020-10-27 14:39:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-27 14:39:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2020-10-27 14:39:24,481 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 80 [2020-10-27 14:39:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:24,482 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2020-10-27 14:39:24,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:39:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2020-10-27 14:39:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:39:24,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:24,483 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:24,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:39:24,483 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash 74152562, now seen corresponding path program 8 times [2020-10-27 14:39:24,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:24,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449992920] [2020-10-27 14:39:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 14:39:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:39:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:29,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:39:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:29,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:39:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:29,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:39:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 14:39:30,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449992920] [2020-10-27 14:39:30,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:30,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:39:30,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110543871] [2020-10-27 14:39:30,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:39:30,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:30,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:39:30,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:39:30,030 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 19 states. [2020-10-27 14:39:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:32,312 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-27 14:39:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:39:32,315 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-27 14:39:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:32,317 INFO L225 Difference]: With dead ends: 160 [2020-10-27 14:39:32,317 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 14:39:32,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:39:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 14:39:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 91. [2020-10-27 14:39:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 14:39:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-27 14:39:32,332 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 83 [2020-10-27 14:39:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:32,332 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-27 14:39:32,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:39:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-27 14:39:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:39:32,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:32,333 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:32,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:39:32,334 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash 860601841, now seen corresponding path program 9 times [2020-10-27 14:39:32,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:32,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291337658] [2020-10-27 14:39:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4467 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 14:39:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:39:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:39:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:39:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:39:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:39:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 60 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-27 14:39:37,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291337658] [2020-10-27 14:39:37,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:37,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:39:37,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558725723] [2020-10-27 14:39:37,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:39:37,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:37,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:39:37,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:39:37,062 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 16 states. [2020-10-27 14:39:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:37,830 INFO L93 Difference]: Finished difference Result 217 states and 237 transitions. [2020-10-27 14:39:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:39:37,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-27 14:39:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:37,835 INFO L225 Difference]: With dead ends: 217 [2020-10-27 14:39:37,836 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 14:39:37,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:39:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 14:39:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-10-27 14:39:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:39:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-10-27 14:39:37,855 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 88 [2020-10-27 14:39:37,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:37,857 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-10-27 14:39:37,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:39:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-10-27 14:39:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:39:37,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:37,858 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:37,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:39:37,858 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2141549248, now seen corresponding path program 10 times [2020-10-27 14:39:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167819286] [2020-10-27 14:39:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:39:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:39:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:39:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:39:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:39:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:39:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:43,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:39:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:39:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:39:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:39:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 14:39:43,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167819286] [2020-10-27 14:39:43,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:43,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:39:43,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062943302] [2020-10-27 14:39:43,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:39:43,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:43,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:39:43,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:39:43,356 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 20 states. [2020-10-27 14:39:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:45,183 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2020-10-27 14:39:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:39:45,184 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-27 14:39:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:45,187 INFO L225 Difference]: With dead ends: 145 [2020-10-27 14:39:45,187 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 14:39:45,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:39:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 14:39:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2020-10-27 14:39:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 14:39:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-27 14:39:45,210 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 93 [2020-10-27 14:39:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:45,210 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-27 14:39:45,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:39:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-27 14:39:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:39:45,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:45,212 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:45,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:39:45,212 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:45,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1672337790, now seen corresponding path program 9 times [2020-10-27 14:39:45,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:45,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410394507] [2020-10-27 14:39:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:39:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:39:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:39:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:39:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:39:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:50,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:39:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:39:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:39:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 10 proven. 101 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 14:39:50,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410394507] [2020-10-27 14:39:50,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:50,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:39:50,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415886350] [2020-10-27 14:39:50,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:39:50,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:50,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:39:50,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:39:50,686 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 19 states. [2020-10-27 14:39:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:52,643 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2020-10-27 14:39:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:39:52,643 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-27 14:39:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:52,645 INFO L225 Difference]: With dead ends: 182 [2020-10-27 14:39:52,645 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 14:39:52,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:39:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 14:39:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 130. [2020-10-27 14:39:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:39:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2020-10-27 14:39:52,667 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 93 [2020-10-27 14:39:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:52,667 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2020-10-27 14:39:52,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:39:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2020-10-27 14:39:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 14:39:52,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:52,669 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:39:52,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:39:52,669 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:52,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1598157139, now seen corresponding path program 10 times [2020-10-27 14:39:52,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:52,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343814456] [2020-10-27 14:39:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:39:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:39:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 14:39:57,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:39:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:58,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:39:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:39:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:39:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:39:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:58,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:58,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 14:39:58,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343814456] [2020-10-27 14:39:58,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:39:58,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:39:58,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859860111] [2020-10-27 14:39:58,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:39:58,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:58,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:39:58,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:39:58,277 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 21 states. [2020-10-27 14:40:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:01,009 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2020-10-27 14:40:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:40:01,009 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-10-27 14:40:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:01,011 INFO L225 Difference]: With dead ends: 182 [2020-10-27 14:40:01,011 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 14:40:01,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:40:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 14:40:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 104. [2020-10-27 14:40:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:40:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-10-27 14:40:01,028 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 96 [2020-10-27 14:40:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:01,028 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-10-27 14:40:01,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:40:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-10-27 14:40:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:40:01,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:01,030 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:01,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:40:01,030 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1910654678, now seen corresponding path program 11 times [2020-10-27 14:40:01,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:01,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804310112] [2020-10-27 14:40:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 14:40:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:40:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:40:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:40:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:40:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 14:40:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:40:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:40:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:06,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:40:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:40:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:40:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:40:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 84 proven. 51 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 14:40:06,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804310112] [2020-10-27 14:40:06,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:06,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:40:06,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572757402] [2020-10-27 14:40:06,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:40:06,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:06,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:40:06,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:40:06,354 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 18 states. [2020-10-27 14:40:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:07,258 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2020-10-27 14:40:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:40:07,259 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 101 [2020-10-27 14:40:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:07,261 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:40:07,261 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:40:07,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:40:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:40:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-10-27 14:40:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:40:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2020-10-27 14:40:07,275 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 101 [2020-10-27 14:40:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:07,275 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2020-10-27 14:40:07,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:40:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2020-10-27 14:40:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 14:40:07,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:07,291 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:07,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:40:07,291 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash -279989897, now seen corresponding path program 12 times [2020-10-27 14:40:07,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:07,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532953021] [2020-10-27 14:40:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:40:12,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:40:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:40:12,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 14:40:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:12,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:12,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:40:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:40:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:40:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:40:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:40:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:40:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 14:40:12,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532953021] [2020-10-27 14:40:12,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:40:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728793758] [2020-10-27 14:40:12,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:40:12,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:40:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:40:12,895 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 22 states. [2020-10-27 14:40:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:15,315 INFO L93 Difference]: Finished difference Result 162 states and 182 transitions. [2020-10-27 14:40:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:40:15,316 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 106 [2020-10-27 14:40:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:15,318 INFO L225 Difference]: With dead ends: 162 [2020-10-27 14:40:15,319 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:40:15,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:40:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:40:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2020-10-27 14:40:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 14:40:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2020-10-27 14:40:15,338 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 106 [2020-10-27 14:40:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:15,339 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2020-10-27 14:40:15,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:40:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2020-10-27 14:40:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 14:40:15,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:15,340 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:15,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:40:15,341 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:15,341 INFO L82 PathProgramCache]: Analyzing trace with hash 153739189, now seen corresponding path program 11 times [2020-10-27 14:40:15,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:15,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922182539] [2020-10-27 14:40:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:40:20,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 14:40:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:20,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:40:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:40:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:40:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:40:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:40:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:40:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:20,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 12 proven. 142 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-27 14:40:20,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922182539] [2020-10-27 14:40:20,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:20,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:40:20,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598406389] [2020-10-27 14:40:20,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:40:20,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:40:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:40:20,911 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand 21 states. [2020-10-27 14:40:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:23,543 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2020-10-27 14:40:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:40:23,543 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-27 14:40:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:23,545 INFO L225 Difference]: With dead ends: 204 [2020-10-27 14:40:23,545 INFO L226 Difference]: Without dead ends: 201 [2020-10-27 14:40:23,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:40:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-27 14:40:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 147. [2020-10-27 14:40:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:40:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2020-10-27 14:40:23,572 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 106 [2020-10-27 14:40:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:23,572 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2020-10-27 14:40:23,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:40:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2020-10-27 14:40:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:40:23,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:23,574 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:23,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:40:23,574 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash -291404246, now seen corresponding path program 12 times [2020-10-27 14:40:23,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:23,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893977555] [2020-10-27 14:40:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:40:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:40:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 14:40:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:40:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:40:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:40:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:40:30,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:40:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:40:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:40:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:40:30,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:40:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:30,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:40:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 103 proven. 71 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 14:40:30,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893977555] [2020-10-27 14:40:30,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:30,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:40:30,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723371331] [2020-10-27 14:40:30,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:40:30,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:30,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:40:30,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:40:30,247 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand 28 states. [2020-10-27 14:40:32,428 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-27 14:40:32,791 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-27 14:40:34,779 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-27 14:40:35,133 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-27 14:40:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:35,239 INFO L93 Difference]: Finished difference Result 266 states and 314 transitions. [2020-10-27 14:40:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-27 14:40:35,240 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2020-10-27 14:40:35,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:35,243 INFO L225 Difference]: With dead ends: 266 [2020-10-27 14:40:35,243 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:40:35,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1173, Invalid=5307, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 14:40:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:40:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-27 14:40:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:40:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2020-10-27 14:40:35,271 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 109 [2020-10-27 14:40:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:35,272 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2020-10-27 14:40:35,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:40:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2020-10-27 14:40:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:40:35,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:35,273 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:35,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:40:35,274 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2045363916, now seen corresponding path program 13 times [2020-10-27 14:40:35,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:35,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914609661] [2020-10-27 14:40:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:40:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:40:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 14:40:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:41,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:40:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:41,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:40:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:40:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:40:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:40:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:40:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:40:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 164 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-27 14:40:41,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914609661] [2020-10-27 14:40:41,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:41,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:40:41,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550262392] [2020-10-27 14:40:41,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:40:41,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:41,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:40:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:40:41,142 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand 23 states. [2020-10-27 14:40:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:44,600 INFO L93 Difference]: Finished difference Result 205 states and 233 transitions. [2020-10-27 14:40:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:40:44,609 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 111 [2020-10-27 14:40:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:44,610 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:40:44,610 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 14:40:44,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=193, Invalid=2159, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:40:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 14:40:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 119. [2020-10-27 14:40:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 14:40:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2020-10-27 14:40:44,626 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 111 [2020-10-27 14:40:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:44,626 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2020-10-27 14:40:44,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:40:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2020-10-27 14:40:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:40:44,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:44,628 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:44,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:40:44,628 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1051953919, now seen corresponding path program 13 times [2020-10-27 14:40:44,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:44,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812151839] [2020-10-27 14:40:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:40:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:49,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:40:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:40:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:40:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:40:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:49,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:40:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:40:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:40:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 112 proven. 70 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 14:40:50,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812151839] [2020-10-27 14:40:50,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:50,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:40:50,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965991414] [2020-10-27 14:40:50,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:40:50,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:50,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:40:50,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:40:50,030 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand 20 states. [2020-10-27 14:40:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:50,944 INFO L93 Difference]: Finished difference Result 200 states and 213 transitions. [2020-10-27 14:40:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:40:50,945 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:40:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:50,947 INFO L225 Difference]: With dead ends: 200 [2020-10-27 14:40:50,947 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:40:50,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:40:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:40:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2020-10-27 14:40:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 14:40:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-10-27 14:40:50,962 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 116 [2020-10-27 14:40:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:50,963 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-10-27 14:40:50,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:40:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-10-27 14:40:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:40:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:50,964 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:50,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:40:50,964 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 108107384, now seen corresponding path program 14 times [2020-10-27 14:40:50,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:50,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330141295] [2020-10-27 14:40:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 14:40:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:40:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:40:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:40:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:40:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:40:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:56,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:40:56,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:40:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:40:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:40:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:40:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:40:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:40:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:40:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:56,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 14:40:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330141295] [2020-10-27 14:40:56,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:56,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:40:56,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455001447] [2020-10-27 14:40:56,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:40:56,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:40:56,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:40:56,693 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 24 states. [2020-10-27 14:40:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:59,689 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2020-10-27 14:40:59,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:40:59,691 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2020-10-27 14:40:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:59,693 INFO L225 Difference]: With dead ends: 179 [2020-10-27 14:40:59,693 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:40:59,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:40:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:40:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 160. [2020-10-27 14:40:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 14:40:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2020-10-27 14:40:59,719 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 119 [2020-10-27 14:40:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:59,720 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2020-10-27 14:40:59,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:40:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2020-10-27 14:40:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:40:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:59,721 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:59,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:40:59,722 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash -623860042, now seen corresponding path program 14 times [2020-10-27 14:40:59,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:59,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350539938] [2020-10-27 14:40:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 14:41:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:41:04,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:41:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:41:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:41:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:41:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:41:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:05,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:41:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:41:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:41:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:41:05,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:41:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:41:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:05,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:05,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 14:41:05,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350539938] [2020-10-27 14:41:05,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:05,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:41:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873701205] [2020-10-27 14:41:05,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:41:05,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:41:05,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:41:05,431 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand 23 states. [2020-10-27 14:41:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:08,832 INFO L93 Difference]: Finished difference Result 226 states and 257 transitions. [2020-10-27 14:41:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:41:08,832 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 119 [2020-10-27 14:41:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:08,834 INFO L225 Difference]: With dead ends: 226 [2020-10-27 14:41:08,834 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 14:41:08,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:41:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 14:41:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 164. [2020-10-27 14:41:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:41:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 186 transitions. [2020-10-27 14:41:08,861 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 186 transitions. Word has length 119 [2020-10-27 14:41:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:08,861 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 186 transitions. [2020-10-27 14:41:08,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:41:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 186 transitions. [2020-10-27 14:41:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:41:08,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:08,862 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:08,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:41:08,863 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 394902685, now seen corresponding path program 15 times [2020-10-27 14:41:08,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:08,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833887650] [2020-10-27 14:41:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:41:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 14:41:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:41:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-27 14:41:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:41:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:41:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:41:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:41:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:41:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:41:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:14,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:14,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 14 proven. 215 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-27 14:41:14,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833887650] [2020-10-27 14:41:14,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:14,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:41:14,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168704966] [2020-10-27 14:41:14,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:41:14,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:14,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:41:14,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:41:14,756 INFO L87 Difference]: Start difference. First operand 164 states and 186 transitions. Second operand 25 states. [2020-10-27 14:41:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:18,962 INFO L93 Difference]: Finished difference Result 226 states and 257 transitions. [2020-10-27 14:41:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:41:18,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-10-27 14:41:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:18,964 INFO L225 Difference]: With dead ends: 226 [2020-10-27 14:41:18,964 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 14:41:18,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=208, Invalid=2548, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:41:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 14:41:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 130. [2020-10-27 14:41:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:41:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2020-10-27 14:41:18,985 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 122 [2020-10-27 14:41:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:18,985 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2020-10-27 14:41:18,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:41:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2020-10-27 14:41:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 14:41:18,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:18,986 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:18,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:41:18,987 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:18,987 INFO L82 PathProgramCache]: Analyzing trace with hash -468448670, now seen corresponding path program 15 times [2020-10-27 14:41:18,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:18,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242109316] [2020-10-27 14:41:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:41:24,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:41:24,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 14:41:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:41:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:41:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:41:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:41:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:41:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:41:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:41:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:41:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:24,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 144 proven. 92 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-27 14:41:24,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242109316] [2020-10-27 14:41:24,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:24,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:41:24,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583545] [2020-10-27 14:41:24,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:41:24,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:24,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:41:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:41:24,423 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 22 states. [2020-10-27 14:41:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:25,662 INFO L93 Difference]: Finished difference Result 313 states and 339 transitions. [2020-10-27 14:41:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:41:25,663 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 127 [2020-10-27 14:41:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:25,665 INFO L225 Difference]: With dead ends: 313 [2020-10-27 14:41:25,665 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 14:41:25,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:41:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 14:41:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 135. [2020-10-27 14:41:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-27 14:41:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-27 14:41:25,684 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 127 [2020-10-27 14:41:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:25,684 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-27 14:41:25,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:41:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-27 14:41:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:41:25,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:25,685 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:25,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:41:25,686 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash 531112423, now seen corresponding path program 16 times [2020-10-27 14:41:25,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:25,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806874057] [2020-10-27 14:41:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:30,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:30,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 14:41:30,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:41:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:41:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:41:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:41:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 14:41:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:41:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:41:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:41:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:41:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:41:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:41:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:41:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:41:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-27 14:41:31,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806874057] [2020-10-27 14:41:31,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:31,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:41:31,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422433472] [2020-10-27 14:41:31,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:41:31,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:31,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:41:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:41:31,548 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 26 states. [2020-10-27 14:41:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:34,947 INFO L93 Difference]: Finished difference Result 196 states and 220 transitions. [2020-10-27 14:41:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:41:34,948 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 132 [2020-10-27 14:41:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:34,950 INFO L225 Difference]: With dead ends: 196 [2020-10-27 14:41:34,950 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 14:41:34,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:41:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 14:41:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2020-10-27 14:41:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 14:41:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-10-27 14:41:34,979 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 132 [2020-10-27 14:41:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:34,980 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-10-27 14:41:34,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:41:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-10-27 14:41:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:41:34,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:34,981 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:34,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:41:34,981 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1418335269, now seen corresponding path program 16 times [2020-10-27 14:41:34,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:34,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433968243] [2020-10-27 14:41:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:41:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:41:40,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 14:41:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:41:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:41:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:40,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:41:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:41:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:41:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:41:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:41:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:41:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-27 14:41:40,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433968243] [2020-10-27 14:41:40,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:40,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:41:40,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122453547] [2020-10-27 14:41:40,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:41:40,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:41:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:41:40,766 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 25 states. [2020-10-27 14:41:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:44,781 INFO L93 Difference]: Finished difference Result 248 states and 282 transitions. [2020-10-27 14:41:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:41:44,782 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 132 [2020-10-27 14:41:44,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:44,786 INFO L225 Difference]: With dead ends: 248 [2020-10-27 14:41:44,786 INFO L226 Difference]: Without dead ends: 245 [2020-10-27 14:41:44,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:41:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-27 14:41:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 181. [2020-10-27 14:41:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 14:41:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2020-10-27 14:41:44,819 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 132 [2020-10-27 14:41:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:44,820 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2020-10-27 14:41:44,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:41:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2020-10-27 14:41:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 14:41:44,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:44,821 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:44,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:41:44,821 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash 707213794, now seen corresponding path program 17 times [2020-10-27 14:41:44,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:44,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575234777] [2020-10-27 14:41:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 14:41:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:41:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:41:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:41:50,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:41:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:41:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:41:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:41:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:41:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:41:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:41:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:41:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:41:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:41:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 14:41:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:41:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:41:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:41:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 16 proven. 273 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-27 14:41:50,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575234777] [2020-10-27 14:41:50,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:41:50,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:41:50,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723787744] [2020-10-27 14:41:50,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:41:50,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:41:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:41:50,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:41:50,897 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 27 states. [2020-10-27 14:41:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:41:56,299 INFO L93 Difference]: Finished difference Result 248 states and 282 transitions. [2020-10-27 14:41:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:41:56,299 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 135 [2020-10-27 14:41:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:41:56,301 INFO L225 Difference]: With dead ends: 248 [2020-10-27 14:41:56,301 INFO L226 Difference]: Without dead ends: 245 [2020-10-27 14:41:56,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=233, Invalid=3189, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:41:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-27 14:41:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 143. [2020-10-27 14:41:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 14:41:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2020-10-27 14:41:56,324 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 135 [2020-10-27 14:41:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:41:56,325 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2020-10-27 14:41:56,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:41:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2020-10-27 14:41:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:41:56,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:41:56,326 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:41:56,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:41:56,326 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:41:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:41:56,327 INFO L82 PathProgramCache]: Analyzing trace with hash -650397999, now seen corresponding path program 17 times [2020-10-27 14:41:56,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:41:56,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454982578] [2020-10-27 14:41:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:41:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:41:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:41:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking...