/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:05:48,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:05:48,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:05:48,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:05:48,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:05:48,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:05:48,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:05:48,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:05:48,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:05:48,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:05:48,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:05:48,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:05:48,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:05:48,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:05:48,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:05:48,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:05:48,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:05:48,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:05:48,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:05:48,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:05:48,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:05:48,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:05:48,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:05:48,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:05:48,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:05:48,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:05:48,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:05:48,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:05:48,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:05:48,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:05:48,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:05:48,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:05:48,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:05:48,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:05:48,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:05:48,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:05:48,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:05:48,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:05:48,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:05:48,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:05:48,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:05:48,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:05:48,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:05:48,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:05:48,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:05:48,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:05:48,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:05:48,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:05:48,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:05:48,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:05:48,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:05:48,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:05:48,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:05:48,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:05:48,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:05:48,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:05:48,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:05:48,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:05:48,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:05:48,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:05:48,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:05:48,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:05:48,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:05:48,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:05:48,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:05:48,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:05:48,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:05:48,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:05:48,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:05:48,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:05:48,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:05:48,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:05:48,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:05:49,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:05:49,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:05:49,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:05:49,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:05:49,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-26 21:05:49,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13774c1/98bebe84795046409c07b928159be241/FLAGa29ad21e7 [2020-10-26 21:05:50,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:05:50,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-26 21:05:50,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13774c1/98bebe84795046409c07b928159be241/FLAGa29ad21e7 [2020-10-26 21:05:50,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef13774c1/98bebe84795046409c07b928159be241 [2020-10-26 21:05:50,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:05:50,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:05:50,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:05:50,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:05:50,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:05:50,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:05:50" (1/1) ... [2020-10-26 21:05:50,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c6cf48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:50, skipping insertion in model container [2020-10-26 21:05:50,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:05:50" (1/1) ... [2020-10-26 21:05:50,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:05:50,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:05:52,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:05:52,155 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:05:53,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:05:53,037 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:05:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53 WrapperNode [2020-10-26 21:05:53,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:05:53,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:05:53,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:05:53,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:05:53,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... [2020-10-26 21:05:53,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:05:53,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:05:53,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:05:53,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:05:53,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:05:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:05:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:05:53,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:05:53,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:05:53,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:05:53,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:05:53,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:05:53,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:05:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:05:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:05:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:05:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:05:53,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:05:53,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:05:53,492 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:05:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:05:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:05:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:05:53,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:05:58,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:05:58,641 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:05:58,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:05:58 BoogieIcfgContainer [2020-10-26 21:05:58,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:05:58,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:05:58,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:05:58,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:05:58,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:05:50" (1/3) ... [2020-10-26 21:05:58,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8711b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:05:58, skipping insertion in model container [2020-10-26 21:05:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:53" (2/3) ... [2020-10-26 21:05:58,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8711b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:05:58, skipping insertion in model container [2020-10-26 21:05:58,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:05:58" (3/3) ... [2020-10-26 21:05:58,655 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label40.c [2020-10-26 21:05:58,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:05:58,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:05:58,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:05:58,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:05:58,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:05:58,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:05:58,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:05:58,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:05:58,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:05:58,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:05:58,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:05:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:05:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-26 21:05:58,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:05:58,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:05:58,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:05:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:05:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 875460724, now seen corresponding path program 1 times [2020-10-26 21:05:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:05:58,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534914589] [2020-10-26 21:05:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:05:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:04,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:04,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 792 [2020-10-26 21:06:04,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5224 [2020-10-26 21:06:04,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:06:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-26 21:06:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:06:06,093 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:06:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:06:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534914589] [2020-10-26 21:06:07,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:07,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:06:07,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977093541] [2020-10-26 21:06:07,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:06:07,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:06:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:06:07,119 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:06:07,298 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:17,872 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-26 21:06:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:06:17,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 776 [2020-10-26 21:06:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:17,928 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:06:17,928 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:06:17,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:06:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:06:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-26 21:06:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-26 21:06:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-26 21:06:18,133 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 776 [2020-10-26 21:06:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:18,138 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-26 21:06:18,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:06:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-26 21:06:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-26 21:06:18,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:18,168 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:18,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:06:18,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:18,170 INFO L82 PathProgramCache]: Analyzing trace with hash 259158614, now seen corresponding path program 1 times [2020-10-26 21:06:18,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:18,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111976233] [2020-10-26 21:06:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-26 21:06:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 21:06:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:06:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 21:06:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:23,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:23,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:23,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:23,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:23,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:06:23,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:06:23,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:06:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:06:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:24,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111976233] [2020-10-26 21:06:24,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:24,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:06:24,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206312589] [2020-10-26 21:06:24,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:06:24,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:06:24,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:06:24,194 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 7 states. [2020-10-26 21:06:24,332 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:26,478 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:06:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:36,685 INFO L93 Difference]: Finished difference Result 5178 states and 9305 transitions. [2020-10-26 21:06:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:06:36,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 784 [2020-10-26 21:06:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:36,717 INFO L225 Difference]: With dead ends: 5178 [2020-10-26 21:06:36,717 INFO L226 Difference]: Without dead ends: 3494 [2020-10-26 21:06:36,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:06:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2020-10-26 21:06:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3430. [2020-10-26 21:06:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3430 states. [2020-10-26 21:06:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5402 transitions. [2020-10-26 21:06:36,867 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5402 transitions. Word has length 784 [2020-10-26 21:06:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:36,867 INFO L481 AbstractCegarLoop]: Abstraction has 3430 states and 5402 transitions. [2020-10-26 21:06:36,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:06:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5402 transitions. [2020-10-26 21:06:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-26 21:06:36,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:36,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:36,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:06:36,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1718182475, now seen corresponding path program 1 times [2020-10-26 21:06:36,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:36,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60541157] [2020-10-26 21:06:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-26 21:06:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 21:06:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:06:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:42,287 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:42,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:42,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:06:42,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:42,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:42,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:06:42,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:42,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:06:42,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:42,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:42,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:06:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:42,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60541157] [2020-10-26 21:06:42,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:42,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:06:42,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972089454] [2020-10-26 21:06:42,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:06:42,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:42,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:06:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:06:42,751 INFO L87 Difference]: Start difference. First operand 3430 states and 5402 transitions. Second operand 7 states. [2020-10-26 21:06:42,892 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:52,082 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:06:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:55,440 INFO L93 Difference]: Finished difference Result 10416 states and 16701 transitions. [2020-10-26 21:06:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:06:55,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 787 [2020-10-26 21:06:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:55,484 INFO L225 Difference]: With dead ends: 10416 [2020-10-26 21:06:55,485 INFO L226 Difference]: Without dead ends: 6992 [2020-10-26 21:06:55,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:06:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2020-10-26 21:06:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 6972. [2020-10-26 21:06:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6972 states. [2020-10-26 21:06:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 10622 transitions. [2020-10-26 21:06:55,726 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 10622 transitions. Word has length 787 [2020-10-26 21:06:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:55,731 INFO L481 AbstractCegarLoop]: Abstraction has 6972 states and 10622 transitions. [2020-10-26 21:06:55,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:06:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 10622 transitions. [2020-10-26 21:06:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-26 21:06:55,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:55,760 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:55,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:06:55,760 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1371205183, now seen corresponding path program 1 times [2020-10-26 21:06:55,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:55,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996817744] [2020-10-26 21:06:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:00,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:00,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-26 21:07:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:01,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:01,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:01,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 21:07:01,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 21:07:01,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 21:07:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:07:02,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996817744] [2020-10-26 21:07:02,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:02,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:07:02,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500689562] [2020-10-26 21:07:02,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:07:02,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:02,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:07:02,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:07:02,220 INFO L87 Difference]: Start difference. First operand 6972 states and 10622 transitions. Second operand 6 states. [2020-10-26 21:07:02,347 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:14,557 INFO L93 Difference]: Finished difference Result 21121 states and 33586 transitions. [2020-10-26 21:07:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 21:07:14,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 797 [2020-10-26 21:07:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:14,631 INFO L225 Difference]: With dead ends: 21121 [2020-10-26 21:07:14,631 INFO L226 Difference]: Without dead ends: 14155 [2020-10-26 21:07:14,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14155 states. [2020-10-26 21:07:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14155 to 14086. [2020-10-26 21:07:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14086 states. [2020-10-26 21:07:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14086 states to 14086 states and 20970 transitions. [2020-10-26 21:07:15,094 INFO L78 Accepts]: Start accepts. Automaton has 14086 states and 20970 transitions. Word has length 797 [2020-10-26 21:07:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:15,095 INFO L481 AbstractCegarLoop]: Abstraction has 14086 states and 20970 transitions. [2020-10-26 21:07:15,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:07:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 14086 states and 20970 transitions. [2020-10-26 21:07:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-10-26 21:07:15,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:15,146 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:15,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:07:15,146 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:15,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1029145828, now seen corresponding path program 1 times [2020-10-26 21:07:15,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:15,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681400918] [2020-10-26 21:07:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:20,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-26 21:07:20,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-26 21:07:20,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:07:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:20,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:20,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:07:20,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:20,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:20,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:20,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 21:07:20,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:20,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 21:07:20,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 21:07:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 21:07:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 21:07:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:07:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 21:07:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:07:21,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681400918] [2020-10-26 21:07:21,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:21,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:21,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389766116] [2020-10-26 21:07:21,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:21,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:21,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:21,415 INFO L87 Difference]: Start difference. First operand 14086 states and 20970 transitions. Second operand 7 states. [2020-10-26 21:07:21,545 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:24,687 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:07:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:35,001 INFO L93 Difference]: Finished difference Result 41146 states and 63985 transitions. [2020-10-26 21:07:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:07:35,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 842 [2020-10-26 21:07:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:35,113 INFO L225 Difference]: With dead ends: 41146 [2020-10-26 21:07:35,113 INFO L226 Difference]: Without dead ends: 27066 [2020-10-26 21:07:35,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:07:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27066 states. [2020-10-26 21:07:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27066 to 21933. [2020-10-26 21:07:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21933 states. [2020-10-26 21:07:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21933 states to 21933 states and 31678 transitions. [2020-10-26 21:07:35,786 INFO L78 Accepts]: Start accepts. Automaton has 21933 states and 31678 transitions. Word has length 842 [2020-10-26 21:07:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:35,787 INFO L481 AbstractCegarLoop]: Abstraction has 21933 states and 31678 transitions. [2020-10-26 21:07:35,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 21933 states and 31678 transitions. [2020-10-26 21:07:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2020-10-26 21:07:35,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:35,862 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:35,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:07:35,863 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -577307560, now seen corresponding path program 1 times [2020-10-26 21:07:35,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:35,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962551281] [2020-10-26 21:07:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 942 [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:07:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 21:07:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:41,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:07:41,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:07:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:07:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:07:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 21:07:41,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:07:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 21:07:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:07:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:07:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:07:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 21:07:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 139 proven. 105 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-26 21:07:42,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962551281] [2020-10-26 21:07:42,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:42,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:07:42,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007966013] [2020-10-26 21:07:42,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:07:42,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:42,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:07:42,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:42,073 INFO L87 Difference]: Start difference. First operand 21933 states and 31678 transitions. Second operand 8 states. [2020-10-26 21:07:42,202 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:45,185 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:55,064 INFO L93 Difference]: Finished difference Result 57717 states and 84590 transitions. [2020-10-26 21:07:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:07:55,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 918 [2020-10-26 21:07:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:55,199 INFO L225 Difference]: With dead ends: 57717 [2020-10-26 21:07:55,199 INFO L226 Difference]: Without dead ends: 35790 [2020-10-26 21:07:55,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:07:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35790 states. [2020-10-26 21:07:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35790 to 34052. [2020-10-26 21:07:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34052 states. [2020-10-26 21:07:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34052 states to 34052 states and 47538 transitions. [2020-10-26 21:07:56,035 INFO L78 Accepts]: Start accepts. Automaton has 34052 states and 47538 transitions. Word has length 918 [2020-10-26 21:07:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:56,036 INFO L481 AbstractCegarLoop]: Abstraction has 34052 states and 47538 transitions. [2020-10-26 21:07:56,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:07:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34052 states and 47538 transitions. [2020-10-26 21:07:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2020-10-26 21:07:56,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:56,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:56,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:07:56,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2014978506, now seen corresponding path program 1 times [2020-10-26 21:07:56,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:56,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109454049] [2020-10-26 21:07:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 21:08:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,574 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:08:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:01,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:01,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:08:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:08:01,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:08:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:08:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:08:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 21:08:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:08:01,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 21:08:01,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:08:01,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:01,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 21:08:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-26 21:08:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:01,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 148 proven. 53 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-26 21:08:02,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109454049] [2020-10-26 21:08:02,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:02,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:02,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630708696] [2020-10-26 21:08:02,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:02,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:02,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:02,327 INFO L87 Difference]: Start difference. First operand 34052 states and 47538 transitions. Second operand 7 states. [2020-10-26 21:08:02,469 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:08:09,412 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:08:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:15,735 INFO L93 Difference]: Finished difference Result 72455 states and 101300 transitions. [2020-10-26 21:08:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:08:15,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 926 [2020-10-26 21:08:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:15,878 INFO L225 Difference]: With dead ends: 72455 [2020-10-26 21:08:15,878 INFO L226 Difference]: Without dead ends: 38409 [2020-10-26 21:08:15,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:08:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38409 states. [2020-10-26 21:08:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38409 to 35861. [2020-10-26 21:08:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35861 states. [2020-10-26 21:08:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35861 states to 35861 states and 49306 transitions. [2020-10-26 21:08:16,703 INFO L78 Accepts]: Start accepts. Automaton has 35861 states and 49306 transitions. Word has length 926 [2020-10-26 21:08:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:16,704 INFO L481 AbstractCegarLoop]: Abstraction has 35861 states and 49306 transitions. [2020-10-26 21:08:16,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:08:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 35861 states and 49306 transitions. [2020-10-26 21:08:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-26 21:08:16,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:16,783 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:16,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:08:16,784 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash 453286999, now seen corresponding path program 1 times [2020-10-26 21:08:16,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:16,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282365183] [2020-10-26 21:08:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:08:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:21,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 21:08:21,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:22,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:22,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:08:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 21:08:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:08:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 21:08:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 21:08:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 159 proven. 106 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-26 21:08:22,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282365183] [2020-10-26 21:08:22,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:22,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:22,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329900296] [2020-10-26 21:08:22,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:22,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:22,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:22,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:22,857 INFO L87 Difference]: Start difference. First operand 35861 states and 49306 transitions. Second operand 7 states. [2020-10-26 21:08:22,991 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:27,724 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:08:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:37,329 INFO L93 Difference]: Finished difference Result 98842 states and 140010 transitions. [2020-10-26 21:08:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:08:37,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 947 [2020-10-26 21:08:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:37,535 INFO L225 Difference]: With dead ends: 98842 [2020-10-26 21:08:37,535 INFO L226 Difference]: Without dead ends: 62987 [2020-10-26 21:08:37,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:08:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2020-10-26 21:08:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 62125. [2020-10-26 21:08:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62125 states. [2020-10-26 21:08:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62125 states to 62125 states and 81572 transitions. [2020-10-26 21:08:39,268 INFO L78 Accepts]: Start accepts. Automaton has 62125 states and 81572 transitions. Word has length 947 [2020-10-26 21:08:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:39,269 INFO L481 AbstractCegarLoop]: Abstraction has 62125 states and 81572 transitions. [2020-10-26 21:08:39,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:08:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 62125 states and 81572 transitions. [2020-10-26 21:08:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2020-10-26 21:08:39,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:39,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:39,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:08:39,703 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash -637123283, now seen corresponding path program 1 times [2020-10-26 21:08:39,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:39,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262141527] [2020-10-26 21:08:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:44,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:44,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1173 [2020-10-26 21:08:44,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:08:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-26 21:08:44,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:44,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:08:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:08:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:08:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:08:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 21:08:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 21:08:45,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 21:08:45,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-26 21:08:45,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:45,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-26 21:08:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:08:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 384 proven. 170 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-26 21:08:46,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262141527] [2020-10-26 21:08:46,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:46,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:46,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965159073] [2020-10-26 21:08:46,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:46,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:46,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:46,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:46,383 INFO L87 Difference]: Start difference. First operand 62125 states and 81572 transitions. Second operand 7 states. [2020-10-26 21:08:46,633 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 21:08:49,463 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:05,525 INFO L93 Difference]: Finished difference Result 136663 states and 183804 transitions. [2020-10-26 21:09:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:09:05,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1147 [2020-10-26 21:09:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:05,819 INFO L225 Difference]: With dead ends: 136663 [2020-10-26 21:09:05,820 INFO L226 Difference]: Without dead ends: 74544 [2020-10-26 21:09:05,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74544 states. [2020-10-26 21:09:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74544 to 74173. [2020-10-26 21:09:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74173 states. [2020-10-26 21:09:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74173 states to 74173 states and 95832 transitions. [2020-10-26 21:09:08,341 INFO L78 Accepts]: Start accepts. Automaton has 74173 states and 95832 transitions. Word has length 1147 [2020-10-26 21:09:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:08,347 INFO L481 AbstractCegarLoop]: Abstraction has 74173 states and 95832 transitions. [2020-10-26 21:09:08,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 74173 states and 95832 transitions. [2020-10-26 21:09:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2020-10-26 21:09:08,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:08,563 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:08,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:09:08,564 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1046054912, now seen corresponding path program 1 times [2020-10-26 21:09:08,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:08,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633217445] [2020-10-26 21:09:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1192 [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:09:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:09:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:09:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:09:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:09:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 21:09:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:09:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:14,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-26 21:09:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-26 21:09:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:09:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:09:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:09:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 429 proven. 170 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-26 21:09:15,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633217445] [2020-10-26 21:09:15,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:15,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:09:15,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259807343] [2020-10-26 21:09:15,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:09:15,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:09:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:09:15,110 INFO L87 Difference]: Start difference. First operand 74173 states and 95832 transitions. Second operand 7 states. [2020-10-26 21:09:15,381 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93