/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:51:02,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:51:02,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:51:02,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:51:02,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:51:02,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:51:02,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:51:02,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:51:02,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:51:02,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:51:02,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:51:02,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:51:02,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:51:02,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:51:02,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:51:02,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:51:02,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:51:02,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:51:02,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:51:02,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:51:02,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:51:02,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:51:02,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:51:02,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:51:02,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:51:02,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:51:02,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:51:02,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:51:02,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:51:02,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:51:02,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:51:02,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:51:02,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:51:02,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:51:02,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:51:02,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:51:02,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:51:02,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:51:02,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:51:02,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:51:02,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:51:02,437 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 [2020-10-29 07:51:02,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:51:02,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:51:02,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:51:02,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:51:02,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:51:02,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:51:02,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:51:02,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:51:02,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:51:02,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:51:02,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:51:02,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:51:02,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:51:02,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:51:02,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:51:02,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:51:02,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:51:02,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:51:02,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:51:02,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:51:02,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:51:02,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:51:02,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:51:02,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:51:02,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:51:02,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-29 07:51:03,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3dce7670/24544aff7abd4c818d4395683a2cde9b/FLAG5a9fb4ca2 [2020-10-29 07:51:03,914 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:51:03,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-29 07:51:03,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3dce7670/24544aff7abd4c818d4395683a2cde9b/FLAG5a9fb4ca2 [2020-10-29 07:51:04,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3dce7670/24544aff7abd4c818d4395683a2cde9b [2020-10-29 07:51:04,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:51:04,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:51:04,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:51:04,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:51:04,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:51:04,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:51:04" (1/1) ... [2020-10-29 07:51:04,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c2cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:04, skipping insertion in model container [2020-10-29 07:51:04,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:51:04" (1/1) ... [2020-10-29 07:51:04,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:51:04,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:51:05,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:51:05,121 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:51:05,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:51:05,424 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:51:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05 WrapperNode [2020-10-29 07:51:05,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:51:05,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:51:05,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:51:05,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:51:05,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (1/1) ... [2020-10-29 07:51:05,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:51:05,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:51:05,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:51:05,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:51:05,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (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 [2020-10-29 07:51:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:51:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:51:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:51:05,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:51:05,791 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:51:05,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:51:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:51:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:51:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:51:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:51:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:51:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:51:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:51:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:51:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:51:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:51:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:51:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:51:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:51:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:51:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:51:09,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:51:09,424 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:51:09,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:51:09 BoogieIcfgContainer [2020-10-29 07:51:09,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:51:09,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:51:09,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:51:09,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:51:09,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:51:04" (1/3) ... [2020-10-29 07:51:09,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b4491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:51:09, skipping insertion in model container [2020-10-29 07:51:09,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:51:05" (2/3) ... [2020-10-29 07:51:09,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b4491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:51:09, skipping insertion in model container [2020-10-29 07:51:09,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:51:09" (3/3) ... [2020-10-29 07:51:09,438 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-29 07:51:09,454 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:51:09,461 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:51:09,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:51:09,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:51:09,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:51:09,516 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:51:09,516 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:51:09,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:51:09,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:51:09,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:51:09,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:51:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:51:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 07:51:09,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:09,559 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] [2020-10-29 07:51:09,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:09,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2117039617, now seen corresponding path program 1 times [2020-10-29 07:51:09,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:09,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544883443] [2020-10-29 07:51:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 07:51:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-29 07:51:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:10,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 07:51:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:51:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:10,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:10,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:51:10,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:10,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:10,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544883443] [2020-10-29 07:51:10,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:10,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:51:10,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217857283] [2020-10-29 07:51:10,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:51:10,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:51:10,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:51:10,728 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:51:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:19,596 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-29 07:51:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:19,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-29 07:51:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:19,622 INFO L225 Difference]: With dead ends: 1229 [2020-10-29 07:51:19,622 INFO L226 Difference]: Without dead ends: 709 [2020-10-29 07:51:19,636 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 [2020-10-29 07:51:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-29 07:51:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-29 07:51:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-29 07:51:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-29 07:51:19,786 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 36 [2020-10-29 07:51:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:19,787 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-29 07:51:19,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:51:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-29 07:51:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 07:51:19,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:19,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:19,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:51:19,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:19,795 INFO L82 PathProgramCache]: Analyzing trace with hash 950484538, now seen corresponding path program 1 times [2020-10-29 07:51:19,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:19,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733552886] [2020-10-29 07:51:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:51:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-29 07:51:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:21,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:51:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:51:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:51:21,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:21,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:21,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:21,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:51:21,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:21,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:21,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:21,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:51:21,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 07:51:21,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:21,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:21,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 07:51:21,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:51:21,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733552886] [2020-10-29 07:51:21,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:21,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:51:21,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321718840] [2020-10-29 07:51:21,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:51:21,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:51:21,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:51:21,921 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 5 states. [2020-10-29 07:51:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:31,596 INFO L93 Difference]: Finished difference Result 1697 states and 2715 transitions. [2020-10-29 07:51:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:31,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 07:51:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:31,606 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 07:51:31,606 INFO L226 Difference]: Without dead ends: 1008 [2020-10-29 07:51:31,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-29 07:51:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2020-10-29 07:51:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-29 07:51:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1363 transitions. [2020-10-29 07:51:31,657 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1363 transitions. Word has length 106 [2020-10-29 07:51:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:31,658 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1363 transitions. [2020-10-29 07:51:31,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:51:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1363 transitions. [2020-10-29 07:51:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 07:51:31,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:31,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:31,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:51:31,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:31,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1077347085, now seen corresponding path program 1 times [2020-10-29 07:51:31,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:31,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746746211] [2020-10-29 07:51:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:51:33,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-29 07:51:33,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:51:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:51:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:33,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:51:33,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:51:33,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:33,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746746211] [2020-10-29 07:51:33,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:33,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:51:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65871911] [2020-10-29 07:51:33,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:33,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:33,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:33,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:33,630 INFO L87 Difference]: Start difference. First operand 1006 states and 1363 transitions. Second operand 7 states. [2020-10-29 07:51:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:44,494 INFO L93 Difference]: Finished difference Result 2362 states and 3361 transitions. [2020-10-29 07:51:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:44,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 07:51:44,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:44,513 INFO L225 Difference]: With dead ends: 2362 [2020-10-29 07:51:44,513 INFO L226 Difference]: Without dead ends: 1669 [2020-10-29 07:51:44,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-10-29 07:51:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1338. [2020-10-29 07:51:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-29 07:51:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-29 07:51:44,567 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 119 [2020-10-29 07:51:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:44,568 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-29 07:51:44,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-29 07:51:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 07:51:44,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:44,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:44,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:51:44,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1446893833, now seen corresponding path program 1 times [2020-10-29 07:51:44,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:44,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932526153] [2020-10-29 07:51:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:47,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:47,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:51:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3190 [2020-10-29 07:51:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:47,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:51:47,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:51:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:51:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:51:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:51:48,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:51:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-29 07:51:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:48,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:51:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:51:49,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932526153] [2020-10-29 07:51:49,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:51:49,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:51:49,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890722747] [2020-10-29 07:51:49,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:49,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:49,148 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 7 states. [2020-10-29 07:51:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:59,470 INFO L93 Difference]: Finished difference Result 3012 states and 3819 transitions. [2020-10-29 07:51:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:51:59,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-29 07:51:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:59,485 INFO L225 Difference]: With dead ends: 3012 [2020-10-29 07:51:59,486 INFO L226 Difference]: Without dead ends: 1680 [2020-10-29 07:51:59,489 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 [2020-10-29 07:51:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-29 07:51:59,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1658. [2020-10-29 07:51:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-29 07:51:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2060 transitions. [2020-10-29 07:51:59,542 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2060 transitions. Word has length 236 [2020-10-29 07:51:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:59,543 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2060 transitions. [2020-10-29 07:51:59,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2060 transitions. [2020-10-29 07:51:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 07:51:59,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:59,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:59,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:51:59,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -686211058, now seen corresponding path program 1 times [2020-10-29 07:51:59,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:59,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212330715] [2020-10-29 07:51:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:01,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-29 07:52:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1852 [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-29 07:52:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:01,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:52:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:01,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:52:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:02,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:52:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-29 07:52:02,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:02,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:52:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:52:02,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212330715] [2020-10-29 07:52:02,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:02,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:52:02,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766746755] [2020-10-29 07:52:02,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:52:02,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:52:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:52:02,720 INFO L87 Difference]: Start difference. First operand 1658 states and 2060 transitions. Second operand 6 states. [2020-10-29 07:52:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:11,106 INFO L93 Difference]: Finished difference Result 2010 states and 2480 transitions. [2020-10-29 07:52:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:52:11,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-29 07:52:11,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:11,127 INFO L225 Difference]: With dead ends: 2010 [2020-10-29 07:52:11,127 INFO L226 Difference]: Without dead ends: 2007 [2020-10-29 07:52:11,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-29 07:52:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1969. [2020-10-29 07:52:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-10-29 07:52:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2432 transitions. [2020-10-29 07:52:11,211 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2432 transitions. Word has length 310 [2020-10-29 07:52:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:11,212 INFO L481 AbstractCegarLoop]: Abstraction has 1969 states and 2432 transitions. [2020-10-29 07:52:11,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:52:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2432 transitions. [2020-10-29 07:52:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-29 07:52:11,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:11,219 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:11,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:52:11,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash 702795850, now seen corresponding path program 1 times [2020-10-29 07:52:11,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:11,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947303770] [2020-10-29 07:52:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-29 07:52:16,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:52:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-29 07:52:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:52:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:52:16,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:52:16,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:52:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:52:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:17,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:17,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:52:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-29 07:52:17,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:17,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:17,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:52:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 118 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:52:17,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947303770] [2020-10-29 07:52:17,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:17,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:52:17,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326438315] [2020-10-29 07:52:17,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:52:17,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:52:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:52:17,887 INFO L87 Difference]: Start difference. First operand 1969 states and 2432 transitions. Second operand 6 states. [2020-10-29 07:52:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:27,028 INFO L93 Difference]: Finished difference Result 4607 states and 5887 transitions. [2020-10-29 07:52:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:52:27,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2020-10-29 07:52:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:27,050 INFO L225 Difference]: With dead ends: 4607 [2020-10-29 07:52:27,050 INFO L226 Difference]: Without dead ends: 2620 [2020-10-29 07:52:27,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-10-29 07:52:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2612. [2020-10-29 07:52:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-10-29 07:52:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3010 transitions. [2020-10-29 07:52:27,147 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3010 transitions. Word has length 331 [2020-10-29 07:52:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:27,147 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 3010 transitions. [2020-10-29 07:52:27,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:52:27,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3010 transitions. [2020-10-29 07:52:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:52:27,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:27,156 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:27,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:52:27,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 856158722, now seen corresponding path program 1 times [2020-10-29 07:52:27,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:27,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302412767] [2020-10-29 07:52:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:29,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:29,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 07:52:29,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1997 [2020-10-29 07:52:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:29,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:29,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:52:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:52:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:52:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:52:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:29,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:52:29,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-29 07:52:29,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:29,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:52:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:52:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:30,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:30,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:52:30,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:52:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:30,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:52:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:52:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:52:30,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302412767] [2020-10-29 07:52:30,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:30,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:30,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967913089] [2020-10-29 07:52:30,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:30,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:30,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:30,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:30,571 INFO L87 Difference]: Start difference. First operand 2612 states and 3010 transitions. Second operand 7 states. [2020-10-29 07:52:33,523 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 07:52:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:44,327 INFO L93 Difference]: Finished difference Result 6255 states and 7467 transitions. [2020-10-29 07:52:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:52:44,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-29 07:52:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:44,354 INFO L225 Difference]: With dead ends: 6255 [2020-10-29 07:52:44,354 INFO L226 Difference]: Without dead ends: 3956 [2020-10-29 07:52:44,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:52:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2020-10-29 07:52:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3890. [2020-10-29 07:52:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3890 states. [2020-10-29 07:52:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 4460 transitions. [2020-10-29 07:52:44,508 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 4460 transitions. Word has length 395 [2020-10-29 07:52:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:44,509 INFO L481 AbstractCegarLoop]: Abstraction has 3890 states and 4460 transitions. [2020-10-29 07:52:44,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 4460 transitions. [2020-10-29 07:52:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-29 07:52:44,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:44,520 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:44,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:52:44,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:44,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1556206208, now seen corresponding path program 1 times [2020-10-29 07:52:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:44,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319133383] [2020-10-29 07:52:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-29 07:52:48,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3379 [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:52:48,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:52:48,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 07:52:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:52:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:52:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:52:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:48,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:52:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:52:49,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319133383] [2020-10-29 07:52:49,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:49,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:49,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586127165] [2020-10-29 07:52:49,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:49,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:49,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:49,422 INFO L87 Difference]: Start difference. First operand 3890 states and 4460 transitions. Second operand 7 states. [2020-10-29 07:53:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:01,572 INFO L93 Difference]: Finished difference Result 8503 states and 9839 transitions. [2020-10-29 07:53:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:53:01,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-29 07:53:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:01,598 INFO L225 Difference]: With dead ends: 8503 [2020-10-29 07:53:01,598 INFO L226 Difference]: Without dead ends: 4926 [2020-10-29 07:53:01,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:53:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2020-10-29 07:53:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4863. [2020-10-29 07:53:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4863 states. [2020-10-29 07:53:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 5499 transitions. [2020-10-29 07:53:01,753 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 5499 transitions. Word has length 421 [2020-10-29 07:53:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:01,754 INFO L481 AbstractCegarLoop]: Abstraction has 4863 states and 5499 transitions. [2020-10-29 07:53:01,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:53:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 5499 transitions. [2020-10-29 07:53:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 07:53:01,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:01,759 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:53:01,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:53:01,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:01,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:01,760 INFO L82 PathProgramCache]: Analyzing trace with hash 753804280, now seen corresponding path program 1 times [2020-10-29 07:53:01,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:01,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211128593] [2020-10-29 07:53:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:53:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 07:53:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:03,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:03,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:53:03,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:03,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:53:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:53:03,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211128593] [2020-10-29 07:53:03,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:03,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:53:03,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797088411] [2020-10-29 07:53:03,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:53:03,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:53:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:53:03,420 INFO L87 Difference]: Start difference. First operand 4863 states and 5499 transitions. Second operand 5 states. [2020-10-29 07:53:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:13,129 INFO L93 Difference]: Finished difference Result 10684 states and 12415 transitions. [2020-10-29 07:53:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:53:13,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-10-29 07:53:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:13,164 INFO L225 Difference]: With dead ends: 10684 [2020-10-29 07:53:13,164 INFO L226 Difference]: Without dead ends: 6134 [2020-10-29 07:53:13,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:53:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2020-10-29 07:53:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6127. [2020-10-29 07:53:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6127 states. [2020-10-29 07:53:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 6904 transitions. [2020-10-29 07:53:13,343 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 6904 transitions. Word has length 433 [2020-10-29 07:53:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:13,344 INFO L481 AbstractCegarLoop]: Abstraction has 6127 states and 6904 transitions. [2020-10-29 07:53:13,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:53:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 6904 transitions. [2020-10-29 07:53:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-29 07:53:13,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:13,352 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:53:13,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:53:13,353 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -323003252, now seen corresponding path program 1 times [2020-10-29 07:53:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976705920] [2020-10-29 07:53:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4823 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:53:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:18,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 07:53:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:18,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:53:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:53:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:19,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:53:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:53:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:53:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 278 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:53:19,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976705920] [2020-10-29 07:53:19,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:19,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:53:19,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612860464] [2020-10-29 07:53:19,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:53:19,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:19,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:53:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:53:19,744 INFO L87 Difference]: Start difference. First operand 6127 states and 6904 transitions. Second operand 10 states. [2020-10-29 07:53:23,867 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:53:25,538 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-29 07:53:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:53:39,715 INFO L93 Difference]: Finished difference Result 13999 states and 16299 transitions. [2020-10-29 07:53:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 07:53:39,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 524 [2020-10-29 07:53:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:53:39,767 INFO L225 Difference]: With dead ends: 13999 [2020-10-29 07:53:39,768 INFO L226 Difference]: Without dead ends: 9426 [2020-10-29 07:53:39,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=1337, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 07:53:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2020-10-29 07:53:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 9361. [2020-10-29 07:53:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9361 states. [2020-10-29 07:53:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9361 states to 9361 states and 10583 transitions. [2020-10-29 07:53:40,019 INFO L78 Accepts]: Start accepts. Automaton has 9361 states and 10583 transitions. Word has length 524 [2020-10-29 07:53:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:53:40,020 INFO L481 AbstractCegarLoop]: Abstraction has 9361 states and 10583 transitions. [2020-10-29 07:53:40,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:53:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9361 states and 10583 transitions. [2020-10-29 07:53:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-29 07:53:40,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:53:40,031 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:53:40,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:53:40,032 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:53:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:53:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1305579236, now seen corresponding path program 1 times [2020-10-29 07:53:40,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:53:40,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989733861] [2020-10-29 07:53:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:53:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:53:45,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-29 07:53:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:53:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:53:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:53:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:53:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:53:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:53:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:53:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:53:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:53:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:53:46,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:53:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:53:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-29 07:53:46,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:53:46,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:53:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:53:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:53:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:53:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:53:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:53:46,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989733861] [2020-10-29 07:53:46,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:53:46,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:53:46,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072910747] [2020-10-29 07:53:46,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:53:46,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:53:46,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:53:46,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:53:46,913 INFO L87 Difference]: Start difference. First operand 9361 states and 10583 transitions. Second operand 7 states. [2020-10-29 07:54:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:03,973 INFO L93 Difference]: Finished difference Result 19756 states and 22766 transitions. [2020-10-29 07:54:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:03,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-29 07:54:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:04,020 INFO L225 Difference]: With dead ends: 19756 [2020-10-29 07:54:04,020 INFO L226 Difference]: Without dead ends: 11951 [2020-10-29 07:54:04,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:54:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11951 states. [2020-10-29 07:54:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11951 to 11587. [2020-10-29 07:54:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11587 states. [2020-10-29 07:54:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 13123 transitions. [2020-10-29 07:54:04,342 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 13123 transitions. Word has length 559 [2020-10-29 07:54:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:04,344 INFO L481 AbstractCegarLoop]: Abstraction has 11587 states and 13123 transitions. [2020-10-29 07:54:04,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 13123 transitions. [2020-10-29 07:54:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-29 07:54:04,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:04,357 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:54:04,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:54:04,357 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:04,358 INFO L82 PathProgramCache]: Analyzing trace with hash -307705887, now seen corresponding path program 1 times [2020-10-29 07:54:04,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:04,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123290265] [2020-10-29 07:54:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:08,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4501 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:54:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:54:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:54:09,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:54:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:54:10,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123290265] [2020-10-29 07:54:10,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:10,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:10,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975855756] [2020-10-29 07:54:10,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:10,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:10,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:10,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:10,094 INFO L87 Difference]: Start difference. First operand 11587 states and 13123 transitions. Second operand 7 states. [2020-10-29 07:54:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:21,995 INFO L93 Difference]: Finished difference Result 26086 states and 30772 transitions. [2020-10-29 07:54:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:54:22,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-29 07:54:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:22,067 INFO L225 Difference]: With dead ends: 26086 [2020-10-29 07:54:22,067 INFO L226 Difference]: Without dead ends: 13866 [2020-10-29 07:54:22,102 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 [2020-10-29 07:54:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13866 states. [2020-10-29 07:54:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13866 to 13752. [2020-10-29 07:54:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13752 states. [2020-10-29 07:54:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13752 states to 13752 states and 15428 transitions. [2020-10-29 07:54:22,497 INFO L78 Accepts]: Start accepts. Automaton has 13752 states and 15428 transitions. Word has length 561 [2020-10-29 07:54:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:22,500 INFO L481 AbstractCegarLoop]: Abstraction has 13752 states and 15428 transitions. [2020-10-29 07:54:22,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:54:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13752 states and 15428 transitions. [2020-10-29 07:54:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-29 07:54:22,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:22,515 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:22,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:54:22,516 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1222976126, now seen corresponding path program 1 times [2020-10-29 07:54:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:22,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555196705] [2020-10-29 07:54:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-29 07:54:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:54:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-29 07:54:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:27,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:54:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:54:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-29 07:54:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:28,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:28,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:54:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:28,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:28,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:54:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:54:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:54:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 07:54:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:54:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-10-29 07:54:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:54:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 401 proven. 56 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-10-29 07:54:29,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555196705] [2020-10-29 07:54:29,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:29,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:54:29,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428787513] [2020-10-29 07:54:29,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:54:29,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:29,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:54:29,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:54:29,058 INFO L87 Difference]: Start difference. First operand 13752 states and 15428 transitions. Second operand 6 states. [2020-10-29 07:54:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:54:39,450 INFO L93 Difference]: Finished difference Result 32991 states and 37738 transitions. [2020-10-29 07:54:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:54:39,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 612 [2020-10-29 07:54:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:54:39,521 INFO L225 Difference]: With dead ends: 32991 [2020-10-29 07:54:39,521 INFO L226 Difference]: Without dead ends: 20795 [2020-10-29 07:54:39,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:54:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20795 states. [2020-10-29 07:54:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20795 to 20756. [2020-10-29 07:54:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20756 states. [2020-10-29 07:54:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20756 states to 20756 states and 23614 transitions. [2020-10-29 07:54:39,961 INFO L78 Accepts]: Start accepts. Automaton has 20756 states and 23614 transitions. Word has length 612 [2020-10-29 07:54:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:54:39,962 INFO L481 AbstractCegarLoop]: Abstraction has 20756 states and 23614 transitions. [2020-10-29 07:54:39,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:54:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 20756 states and 23614 transitions. [2020-10-29 07:54:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-29 07:54:39,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:54:39,977 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:54:39,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:54:39,977 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:54:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:54:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1969606202, now seen corresponding path program 1 times [2020-10-29 07:54:39,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:54:39,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148748761] [2020-10-29 07:54:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:54:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-29 07:54:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:54:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:54:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:54:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:45,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:54:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:54:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:54:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:46,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:54:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:54:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:54:46,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:54:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:54:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-29 07:54:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:54:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:54:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 285 proven. 167 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 07:54:47,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148748761] [2020-10-29 07:54:47,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:54:47,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:54:47,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189622563] [2020-10-29 07:54:47,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:54:47,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:54:47,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:54:47,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:54:47,007 INFO L87 Difference]: Start difference. First operand 20756 states and 23614 transitions. Second operand 7 states. [2020-10-29 07:54:49,499 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67