/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:45:34,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:45:34,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:45:34,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:45:34,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:45:34,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:45:34,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:45:34,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:45:34,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:45:34,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:45:34,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:45:34,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:45:34,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:45:34,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:45:34,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:45:34,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:45:34,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:45:34,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:45:34,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:45:34,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:45:34,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:45:34,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:45:34,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:45:34,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:45:34,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:45:34,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:45:34,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:45:34,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:45:34,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:45:34,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:45:34,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:45:34,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:45:34,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:45:34,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:45:34,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:45:34,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:45:34,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:45:34,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:45:34,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:45:34,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:45:34,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:45:34,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:45:34,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:45:34,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:45:34,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:45:34,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:45:34,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:45:34,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:45:34,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:45:34,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:45:34,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:45:34,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:45:34,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:45:34,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:45:34,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:45:34,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:45:34,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:45:34,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:45:34,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:45:34,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:45:34,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:45:34,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:45:34,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:45:34,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:45:34,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:45:34,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:45:34,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:45:34,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:45:34,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:45:34,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:45:34,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:45:34,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:45:34,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:45:34,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:45:34,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:45:34,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:45:34,952 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:45:34,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2020-10-26 23:45:35,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa224eb3f/7358f09e96c24189860f9f9a27e76d8b/FLAG0d91c107c [2020-10-26 23:45:36,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:45:36,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2020-10-26 23:45:36,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa224eb3f/7358f09e96c24189860f9f9a27e76d8b/FLAG0d91c107c [2020-10-26 23:45:36,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa224eb3f/7358f09e96c24189860f9f9a27e76d8b [2020-10-26 23:45:36,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:45:36,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:45:36,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:36,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:45:36,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:45:36,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:36" (1/1) ... [2020-10-26 23:45:36,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:36, skipping insertion in model container [2020-10-26 23:45:36,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:45:36" (1/1) ... [2020-10-26 23:45:36,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:45:36,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:45:37,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:37,272 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:45:37,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:45:37,698 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:45:37,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37 WrapperNode [2020-10-26 23:45:37,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:45:37,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:45:37,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:45:37,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:45:37,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... [2020-10-26 23:45:37,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:45:37,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:45:37,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:45:37,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:45:37,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:45:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:45:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:45:38,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:45:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:45:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:45:38,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:45:38,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:45:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:45:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:45:38,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:45:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:45:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:45:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:45:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:45:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:45:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:45:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:45:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:45:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:45:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:45:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:45:42,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:45:42,692 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:45:42,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:42 BoogieIcfgContainer [2020-10-26 23:45:42,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:45:42,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:45:42,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:45:42,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:45:42,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:45:36" (1/3) ... [2020-10-26 23:45:42,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a06aa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:42, skipping insertion in model container [2020-10-26 23:45:42,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:45:37" (2/3) ... [2020-10-26 23:45:42,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a06aa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:45:42, skipping insertion in model container [2020-10-26 23:45:42,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:45:42" (3/3) ... [2020-10-26 23:45:42,707 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label43.c [2020-10-26 23:45:42,724 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:45:42,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:45:42,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:45:42,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:45:42,786 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:45:42,786 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:45:42,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:45:42,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:45:42,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:45:42,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:45:42,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:45:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:45:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-26 23:45:42,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:42,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:42,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2026492753, now seen corresponding path program 1 times [2020-10-26 23:45:42,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:42,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662098866] [2020-10-26 23:45:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:45:43,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-26 23:45:43,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 23:45:43,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:45:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:44,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:45:44,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:44,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662098866] [2020-10-26 23:45:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:44,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:45:44,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68628235] [2020-10-26 23:45:44,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:45:44,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:44,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:45:44,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:45:44,308 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:45:44,499 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:45:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:53,504 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:45:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:45:53,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-26 23:45:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:53,539 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:45:53,540 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:45:53,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:45:53,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:45:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:45:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:45:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:45:53,759 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 65 [2020-10-26 23:45:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:53,760 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:45:53,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:45:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:45:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 23:45:53,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:53,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:53,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:45:53,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1004312985, now seen corresponding path program 1 times [2020-10-26 23:45:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:53,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577092663] [2020-10-26 23:45:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:58,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:45:58,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4134 [2020-10-26 23:45:58,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:58,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:45:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:45:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:45:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:45:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:45:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:45:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:58,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:45:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:45:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:45:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:45:58,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577092663] [2020-10-26 23:45:58,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:45:58,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:45:58,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945173608] [2020-10-26 23:45:58,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:58,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:58,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:58,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:58,536 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:46:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:11,455 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-26 23:46:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:46:11,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-26 23:46:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:11,465 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:46:11,466 INFO L226 Difference]: Without dead ends: 1026 [2020-10-26 23:46:11,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:46:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-26 23:46:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-26 23:46:11,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-26 23:46:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-26 23:46:11,549 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 134 [2020-10-26 23:46:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:11,550 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-26 23:46:11,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-26 23:46:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 23:46:11,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:11,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:11,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:46:11,554 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:11,555 INFO L82 PathProgramCache]: Analyzing trace with hash 258829695, now seen corresponding path program 1 times [2020-10-26 23:46:11,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:11,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437605659] [2020-10-26 23:46:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:13,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:13,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 23:46:13,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-26 23:46:13,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:13,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:13,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:46:13,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:13,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:46:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:13,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437605659] [2020-10-26 23:46:13,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:13,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:46:13,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518464581] [2020-10-26 23:46:13,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:13,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:13,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:13,894 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-26 23:46:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:24,209 INFO L93 Difference]: Finished difference Result 2397 states and 3410 transitions. [2020-10-26 23:46:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:24,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-26 23:46:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:24,221 INFO L225 Difference]: With dead ends: 2397 [2020-10-26 23:46:24,221 INFO L226 Difference]: Without dead ends: 1695 [2020-10-26 23:46:24,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-26 23:46:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1344. [2020-10-26 23:46:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-26 23:46:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1741 transitions. [2020-10-26 23:46:24,273 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1741 transitions. Word has length 139 [2020-10-26 23:46:24,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:24,274 INFO L481 AbstractCegarLoop]: Abstraction has 1344 states and 1741 transitions. [2020-10-26 23:46:24,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1741 transitions. [2020-10-26 23:46:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-26 23:46:24,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:24,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:24,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:46:24,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:24,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:24,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1028438104, now seen corresponding path program 1 times [2020-10-26 23:46:24,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:24,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311986102] [2020-10-26 23:46:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 23:46:29,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:46:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4676 [2020-10-26 23:46:29,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:46:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-26 23:46:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:46:29,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:29,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:46:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:46:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:46:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:46:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:30,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:46:30,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-26 23:46:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:30,772 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:46:30,965 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-26 23:46:31,139 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-26 23:46:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:46:31,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311986102] [2020-10-26 23:46:31,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:31,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:46:31,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029140130] [2020-10-26 23:46:31,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:46:31,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:46:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:31,649 INFO L87 Difference]: Start difference. First operand 1344 states and 1741 transitions. Second operand 12 states. [2020-10-26 23:46:31,956 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-26 23:46:33,190 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-10-26 23:46:34,154 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-26 23:46:34,624 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-10-26 23:46:34,873 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-10-26 23:46:35,483 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-26 23:46:36,157 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-26 23:46:36,526 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-26 23:46:36,977 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-10-26 23:46:37,241 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-26 23:46:37,772 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-10-26 23:46:38,458 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-26 23:46:39,203 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-26 23:46:39,990 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-26 23:46:42,044 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-26 23:46:48,544 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-26 23:46:49,251 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-10-26 23:46:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:51,904 INFO L93 Difference]: Finished difference Result 4384 states and 5726 transitions. [2020-10-26 23:46:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 23:46:51,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 239 [2020-10-26 23:46:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:51,934 INFO L225 Difference]: With dead ends: 4384 [2020-10-26 23:46:51,935 INFO L226 Difference]: Without dead ends: 3046 [2020-10-26 23:46:51,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 23:46:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2020-10-26 23:46:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2612. [2020-10-26 23:46:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-10-26 23:46:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3287 transitions. [2020-10-26 23:46:52,070 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3287 transitions. Word has length 239 [2020-10-26 23:46:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:52,071 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3287 transitions. [2020-10-26 23:46:52,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:46:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3287 transitions. [2020-10-26 23:46:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-26 23:46:52,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:52,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:52,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:46:52,081 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1511550403, now seen corresponding path program 1 times [2020-10-26 23:46:52,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:52,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19297228] [2020-10-26 23:46:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:55,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:57,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-26 23:46:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:46:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:46:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:46:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:57,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:57,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:46:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:46:57,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:46:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-26 23:46:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:46:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:46:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:46:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:46:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:46:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:46:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:46:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 114 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:46:59,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19297228] [2020-10-26 23:46:59,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:59,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:46:59,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532315227] [2020-10-26 23:46:59,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:46:59,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:59,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:46:59,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:46:59,122 INFO L87 Difference]: Start difference. First operand 2612 states and 3287 transitions. Second operand 8 states. [2020-10-26 23:47:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:11,142 INFO L93 Difference]: Finished difference Result 4988 states and 6365 transitions. [2020-10-26 23:47:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:47:11,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-10-26 23:47:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:11,169 INFO L225 Difference]: With dead ends: 4988 [2020-10-26 23:47:11,169 INFO L226 Difference]: Without dead ends: 2689 [2020-10-26 23:47:11,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:47:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-10-26 23:47:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2621. [2020-10-26 23:47:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 23:47:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3297 transitions. [2020-10-26 23:47:11,264 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3297 transitions. Word has length 361 [2020-10-26 23:47:11,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:11,266 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 3297 transitions. [2020-10-26 23:47:11,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:47:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3297 transitions. [2020-10-26 23:47:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-26 23:47:11,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:11,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:11,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:47:11,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1882778438, now seen corresponding path program 1 times [2020-10-26 23:47:11,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:11,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001990819] [2020-10-26 23:47:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-26 23:47:13,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:47:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2599 [2020-10-26 23:47:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:47:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:47:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:14,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:47:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:14,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:14,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:14,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:47:14,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:47:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:47:15,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001990819] [2020-10-26 23:47:15,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:15,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:15,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654924199] [2020-10-26 23:47:15,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:15,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:15,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:15,255 INFO L87 Difference]: Start difference. First operand 2621 states and 3297 transitions. Second operand 7 states. [2020-10-26 23:47:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:26,927 INFO L93 Difference]: Finished difference Result 5646 states and 7597 transitions. [2020-10-26 23:47:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:26,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-26 23:47:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:26,949 INFO L225 Difference]: With dead ends: 5646 [2020-10-26 23:47:26,950 INFO L226 Difference]: Without dead ends: 3647 [2020-10-26 23:47:26,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2020-10-26 23:47:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3595. [2020-10-26 23:47:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3595 states. [2020-10-26 23:47:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4550 transitions. [2020-10-26 23:47:27,059 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4550 transitions. Word has length 435 [2020-10-26 23:47:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:27,060 INFO L481 AbstractCegarLoop]: Abstraction has 3595 states and 4550 transitions. [2020-10-26 23:47:27,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4550 transitions. [2020-10-26 23:47:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-26 23:47:27,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:27,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:27,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:47:27,074 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1232769225, now seen corresponding path program 1 times [2020-10-26 23:47:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523672235] [2020-10-26 23:47:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:27,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:47:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 23:47:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:32,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:47:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:47:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:47:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:47:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-26 23:47:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:47:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:47:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:33,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:33,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:47:33,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:47:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 267 proven. 95 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-26 23:47:34,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523672235] [2020-10-26 23:47:34,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:34,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:47:34,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720516305] [2020-10-26 23:47:34,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:47:34,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:34,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:47:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:47:34,010 INFO L87 Difference]: Start difference. First operand 3595 states and 4550 transitions. Second operand 6 states. [2020-10-26 23:47:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:42,563 INFO L93 Difference]: Finished difference Result 7007 states and 8951 transitions. [2020-10-26 23:47:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:47:42,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 456 [2020-10-26 23:47:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:42,580 INFO L225 Difference]: With dead ends: 7007 [2020-10-26 23:47:42,580 INFO L226 Difference]: Without dead ends: 3642 [2020-10-26 23:47:42,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:47:42,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2020-10-26 23:47:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3595. [2020-10-26 23:47:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3595 states. [2020-10-26 23:47:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4519 transitions. [2020-10-26 23:47:42,688 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4519 transitions. Word has length 456 [2020-10-26 23:47:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:42,688 INFO L481 AbstractCegarLoop]: Abstraction has 3595 states and 4519 transitions. [2020-10-26 23:47:42,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:47:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4519 transitions. [2020-10-26 23:47:42,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-26 23:47:42,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:42,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:42,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:47:42,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:42,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:42,698 INFO L82 PathProgramCache]: Analyzing trace with hash -472356789, now seen corresponding path program 1 times [2020-10-26 23:47:42,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:42,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859919874] [2020-10-26 23:47:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-26 23:47:47,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:47:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-26 23:47:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:47:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 474 [2020-10-26 23:47:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:47:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:47:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:47:49,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:47:49,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:47:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:47:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:49,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:49,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:47:49,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-26 23:47:49,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:47:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 351 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-26 23:47:49,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859919874] [2020-10-26 23:47:49,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:49,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:49,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137075136] [2020-10-26 23:47:49,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:47:49,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:47:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:47:49,727 INFO L87 Difference]: Start difference. First operand 3595 states and 4519 transitions. Second operand 8 states. [2020-10-26 23:48:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:02,579 INFO L93 Difference]: Finished difference Result 9194 states and 12227 transitions. [2020-10-26 23:48:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:48:02,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 531 [2020-10-26 23:48:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:02,675 INFO L225 Difference]: With dead ends: 9194 [2020-10-26 23:48:02,676 INFO L226 Difference]: Without dead ends: 6221 [2020-10-26 23:48:02,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:48:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2020-10-26 23:48:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 5809. [2020-10-26 23:48:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2020-10-26 23:48:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 7015 transitions. [2020-10-26 23:48:02,855 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 7015 transitions. Word has length 531 [2020-10-26 23:48:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:02,856 INFO L481 AbstractCegarLoop]: Abstraction has 5809 states and 7015 transitions. [2020-10-26 23:48:02,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:48:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 7015 transitions. [2020-10-26 23:48:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-26 23:48:02,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:02,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:02,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:48:02,865 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash -130202023, now seen corresponding path program 1 times [2020-10-26 23:48:02,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:02,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249508518] [2020-10-26 23:48:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-26 23:48:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:48:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:08,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:08,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:48:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-26 23:48:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-26 23:48:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:09,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-26 23:48:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:48:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 441 proven. 95 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 23:48:09,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249508518] [2020-10-26 23:48:09,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:09,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:48:09,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870302743] [2020-10-26 23:48:09,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:48:09,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:09,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:48:09,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:48:09,701 INFO L87 Difference]: Start difference. First operand 5809 states and 7015 transitions. Second operand 8 states. [2020-10-26 23:48:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:24,868 INFO L93 Difference]: Finished difference Result 14294 states and 17822 transitions. [2020-10-26 23:48:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:48:24,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 541 [2020-10-26 23:48:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:24,906 INFO L225 Difference]: With dead ends: 14294 [2020-10-26 23:48:24,907 INFO L226 Difference]: Without dead ends: 7509 [2020-10-26 23:48:24,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:48:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2020-10-26 23:48:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 6800. [2020-10-26 23:48:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6800 states. [2020-10-26 23:48:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 7970 transitions. [2020-10-26 23:48:25,137 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 7970 transitions. Word has length 541 [2020-10-26 23:48:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:25,138 INFO L481 AbstractCegarLoop]: Abstraction has 6800 states and 7970 transitions. [2020-10-26 23:48:25,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:48:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 7970 transitions. [2020-10-26 23:48:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-26 23:48:25,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:25,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:25,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:48:25,149 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:25,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:25,150 INFO L82 PathProgramCache]: Analyzing trace with hash 53218481, now seen corresponding path program 1 times [2020-10-26 23:48:25,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:25,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922788131] [2020-10-26 23:48:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-26 23:48:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:48:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:30,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:30,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:48:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:48:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:31,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:48:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:48:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:48:31,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:48:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 283 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:48:31,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922788131] [2020-10-26 23:48:31,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:31,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:31,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069853223] [2020-10-26 23:48:31,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:31,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:31,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:31,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:31,762 INFO L87 Difference]: Start difference. First operand 6800 states and 7970 transitions. Second operand 7 states. [2020-10-26 23:48:35,822 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:48:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:43,238 INFO L93 Difference]: Finished difference Result 14281 states and 16844 transitions. [2020-10-26 23:48:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:48:43,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 546 [2020-10-26 23:48:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:43,269 INFO L225 Difference]: With dead ends: 14281 [2020-10-26 23:48:43,270 INFO L226 Difference]: Without dead ends: 8103 [2020-10-26 23:48:43,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2020-10-26 23:48:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 8060. [2020-10-26 23:48:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8060 states. [2020-10-26 23:48:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8060 states to 8060 states and 9332 transitions. [2020-10-26 23:48:43,484 INFO L78 Accepts]: Start accepts. Automaton has 8060 states and 9332 transitions. Word has length 546 [2020-10-26 23:48:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:43,485 INFO L481 AbstractCegarLoop]: Abstraction has 8060 states and 9332 transitions. [2020-10-26 23:48:43,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 8060 states and 9332 transitions. [2020-10-26 23:48:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-26 23:48:43,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:43,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:43,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:48:43,498 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1761806265, now seen corresponding path program 1 times [2020-10-26 23:48:43,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:43,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268502832] [2020-10-26 23:48:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2758 [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:48:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:46,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:46,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:46,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:46,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:46,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:48:46,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:46,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:47,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:48:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:47,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268502832] [2020-10-26 23:48:47,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:47,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:47,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326865596] [2020-10-26 23:48:47,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:47,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:47,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:47,441 INFO L87 Difference]: Start difference. First operand 8060 states and 9332 transitions. Second operand 7 states. [2020-10-26 23:48:50,144 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:48:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:59,049 INFO L93 Difference]: Finished difference Result 18537 states and 22589 transitions. [2020-10-26 23:48:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:59,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-26 23:48:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:59,096 INFO L225 Difference]: With dead ends: 18537 [2020-10-26 23:48:59,096 INFO L226 Difference]: Without dead ends: 11099 [2020-10-26 23:48:59,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2020-10-26 23:48:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 10979. [2020-10-26 23:48:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10979 states. [2020-10-26 23:48:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10979 states to 10979 states and 12992 transitions. [2020-10-26 23:48:59,482 INFO L78 Accepts]: Start accepts. Automaton has 10979 states and 12992 transitions. Word has length 558 [2020-10-26 23:48:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:59,484 INFO L481 AbstractCegarLoop]: Abstraction has 10979 states and 12992 transitions. [2020-10-26 23:48:59,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 10979 states and 12992 transitions. [2020-10-26 23:48:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-26 23:48:59,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:59,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:59,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:48:59,496 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash -197415795, now seen corresponding path program 1 times [2020-10-26 23:48:59,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:59,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623695779] [2020-10-26 23:48:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-26 23:49:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4010 [2020-10-26 23:49:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:49:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:49:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:49:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:49:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:49:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:49:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:49:04,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623695779] [2020-10-26 23:49:04,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:04,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:04,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079719452] [2020-10-26 23:49:04,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:04,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:04,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:04,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:04,832 INFO L87 Difference]: Start difference. First operand 10979 states and 12992 transitions. Second operand 7 states. [2020-10-26 23:49:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:15,206 INFO L93 Difference]: Finished difference Result 24559 states and 30091 transitions. [2020-10-26 23:49:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:49:15,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 568 [2020-10-26 23:49:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:15,260 INFO L225 Difference]: With dead ends: 24559 [2020-10-26 23:49:15,261 INFO L226 Difference]: Without dead ends: 14202 [2020-10-26 23:49:15,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2020-10-26 23:49:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 13845. [2020-10-26 23:49:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13845 states. [2020-10-26 23:49:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13845 states to 13845 states and 16291 transitions. [2020-10-26 23:49:15,618 INFO L78 Accepts]: Start accepts. Automaton has 13845 states and 16291 transitions. Word has length 568 [2020-10-26 23:49:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:15,619 INFO L481 AbstractCegarLoop]: Abstraction has 13845 states and 16291 transitions. [2020-10-26 23:49:15,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 13845 states and 16291 transitions. [2020-10-26 23:49:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-26 23:49:15,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:15,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:15,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:49:15,632 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 843230549, now seen corresponding path program 1 times [2020-10-26 23:49:15,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:15,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944595746] [2020-10-26 23:49:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking...