/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/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:00:10,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:00:10,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:00:10,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:00:10,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:00:10,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:00:10,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:00:10,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:00:10,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:00:10,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:00:10,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:00:10,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:00:10,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:00:10,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:00:10,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:00:10,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:00:10,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:00:10,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:00:10,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:00:10,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:00:10,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:00:10,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:00:10,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:00:10,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:00:10,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:00:10,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:00:10,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:00:10,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:00:10,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:00:10,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:00:10,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:00:10,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:00:10,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:00:10,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:00:10,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:00:10,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:00:10,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:00:10,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:00:10,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:00:10,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:00:10,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:00:10,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:00:10,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:00:10,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:00:10,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:00:10,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:00:10,460 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:00:10,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:00:10,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:00:10,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:00:10,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:00:10,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:00:10,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:00:10,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:00:10,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:00:10,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:00:10,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:00:10,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:00:10,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:00:10,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:00:10,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:00:10,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:00:10,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:00:10,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:00:10,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:00:10,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:00:10,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:00:10,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:00:10,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:00:10,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:00:10,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:00:10,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:00:10,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:00:10,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:00:10,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:00:10,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:00:10,948 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:00:10,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 06:00:11,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4745b5898/0448db7fe62243388b20c2764212e3c1/FLAG4e904c29c [2020-10-27 06:00:11,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:00:11,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 06:00:11,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4745b5898/0448db7fe62243388b20c2764212e3c1/FLAG4e904c29c [2020-10-27 06:00:12,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4745b5898/0448db7fe62243388b20c2764212e3c1 [2020-10-27 06:00:12,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:00:12,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:00:12,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:00:12,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:00:12,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:00:12,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:00:12" (1/1) ... [2020-10-27 06:00:12,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9f21cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:12, skipping insertion in model container [2020-10-27 06:00:12,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:00:12" (1/1) ... [2020-10-27 06:00:12,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:00:12,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:00:12,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:00:12,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:00:13,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:00:13,185 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:00:13,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13 WrapperNode [2020-10-27 06:00:13,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:00:13,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:00:13,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:00:13,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:00:13,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... [2020-10-27 06:00:13,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:00:13,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:00:13,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:00:13,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:00:13,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:00:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:00:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:00:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:00:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:00:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:00:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:00:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:00:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:00:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:00:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:00:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:00:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:00:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:00:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:00:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:00:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:00:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:00:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:00:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:00:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:00:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:00:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:00:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:00:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:00:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:00:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:00:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:00:15,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:00:15,283 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:00:15,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:00:15 BoogieIcfgContainer [2020-10-27 06:00:15,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:00:15,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:00:15,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:00:15,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:00:15,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:00:12" (1/3) ... [2020-10-27 06:00:15,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d9c3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:00:15, skipping insertion in model container [2020-10-27 06:00:15,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:13" (2/3) ... [2020-10-27 06:00:15,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d9c3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:00:15, skipping insertion in model container [2020-10-27 06:00:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:00:15" (3/3) ... [2020-10-27 06:00:15,295 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 06:00:15,308 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:00:15,314 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:00:15,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:00:15,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:00:15,360 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:00:15,360 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:00:15,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:00:15,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:00:15,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:00:15,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:00:15,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:00:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states. [2020-10-27 06:00:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 06:00:15,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:15,411 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] [2020-10-27 06:00:15,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash 406768194, now seen corresponding path program 1 times [2020-10-27 06:00:15,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:15,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920905852] [2020-10-27 06:00:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:18,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:20,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:20,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 06:00:20,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:00:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:00:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 06:00:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:00:21,606 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:21,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:21,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:21,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:21,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:00:21,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:21,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920905852] [2020-10-27 06:00:21,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:21,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546350897] [2020-10-27 06:00:21,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:21,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:21,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:21,771 INFO L87 Difference]: Start difference. First operand 422 states. Second operand 5 states. [2020-10-27 06:00:25,284 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:00:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:26,917 INFO L93 Difference]: Finished difference Result 1195 states and 2141 transitions. [2020-10-27 06:00:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:00:26,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 06:00:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:26,963 INFO L225 Difference]: With dead ends: 1195 [2020-10-27 06:00:26,963 INFO L226 Difference]: Without dead ends: 786 [2020-10-27 06:00:26,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-10-27 06:00:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 763. [2020-10-27 06:00:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-27 06:00:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1099 transitions. [2020-10-27 06:00:27,113 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1099 transitions. Word has length 153 [2020-10-27 06:00:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:27,115 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 1099 transitions. [2020-10-27 06:00:27,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1099 transitions. [2020-10-27 06:00:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 06:00:27,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:27,132 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] [2020-10-27 06:00:27,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:00:27,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash 261068529, now seen corresponding path program 1 times [2020-10-27 06:00:27,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:27,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89331480] [2020-10-27 06:00:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:32,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 06:00:32,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:00:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:00:32,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 06:00:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:32,779 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:32,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89331480] [2020-10-27 06:00:32,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:32,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:32,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856997019] [2020-10-27 06:00:32,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:32,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:32,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:32,901 INFO L87 Difference]: Start difference. First operand 763 states and 1099 transitions. Second operand 5 states. [2020-10-27 06:00:36,001 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:00:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:37,466 INFO L93 Difference]: Finished difference Result 2228 states and 3200 transitions. [2020-10-27 06:00:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:37,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 06:00:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:37,476 INFO L225 Difference]: With dead ends: 2228 [2020-10-27 06:00:37,476 INFO L226 Difference]: Without dead ends: 1478 [2020-10-27 06:00:37,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-10-27 06:00:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1455. [2020-10-27 06:00:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1455 states. [2020-10-27 06:00:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2076 transitions. [2020-10-27 06:00:37,592 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2076 transitions. Word has length 154 [2020-10-27 06:00:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:37,592 INFO L481 AbstractCegarLoop]: Abstraction has 1455 states and 2076 transitions. [2020-10-27 06:00:37,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2076 transitions. [2020-10-27 06:00:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 06:00:37,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:37,597 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] [2020-10-27 06:00:37,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:00:37,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:37,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:37,599 INFO L82 PathProgramCache]: Analyzing trace with hash -768427808, now seen corresponding path program 1 times [2020-10-27 06:00:37,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:37,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904835885] [2020-10-27 06:00:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 06:00:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:00:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 06:00:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 06:00:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:43,197 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:43,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:43,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:43,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:43,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904835885] [2020-10-27 06:00:43,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:43,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:43,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40416773] [2020-10-27 06:00:43,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:43,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:43,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:43,292 INFO L87 Difference]: Start difference. First operand 1455 states and 2076 transitions. Second operand 5 states. [2020-10-27 06:00:45,980 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:00:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:47,439 INFO L93 Difference]: Finished difference Result 4224 states and 5998 transitions. [2020-10-27 06:00:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:47,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 06:00:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:47,456 INFO L225 Difference]: With dead ends: 4224 [2020-10-27 06:00:47,456 INFO L226 Difference]: Without dead ends: 2800 [2020-10-27 06:00:47,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2020-10-27 06:00:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2782. [2020-10-27 06:00:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2782 states. [2020-10-27 06:00:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 3914 transitions. [2020-10-27 06:00:47,615 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 3914 transitions. Word has length 155 [2020-10-27 06:00:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:47,616 INFO L481 AbstractCegarLoop]: Abstraction has 2782 states and 3914 transitions. [2020-10-27 06:00:47,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 3914 transitions. [2020-10-27 06:00:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 06:00:47,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:47,622 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] [2020-10-27 06:00:47,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:00:47,622 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:47,623 INFO L82 PathProgramCache]: Analyzing trace with hash 563075570, now seen corresponding path program 1 times [2020-10-27 06:00:47,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:47,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739180827] [2020-10-27 06:00:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 06:00:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:00:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:00:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:00:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:53,352 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:53,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:00:53,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:53,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:53,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739180827] [2020-10-27 06:00:53,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:53,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:53,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848349485] [2020-10-27 06:00:53,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:53,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:53,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:53,456 INFO L87 Difference]: Start difference. First operand 2782 states and 3914 transitions. Second operand 5 states. [2020-10-27 06:00:56,467 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:00:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:58,134 INFO L93 Difference]: Finished difference Result 7508 states and 10594 transitions. [2020-10-27 06:00:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:58,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 06:00:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:58,161 INFO L225 Difference]: With dead ends: 7508 [2020-10-27 06:00:58,161 INFO L226 Difference]: Without dead ends: 5345 [2020-10-27 06:00:58,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2020-10-27 06:00:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 5318. [2020-10-27 06:00:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5318 states. [2020-10-27 06:00:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 7392 transitions. [2020-10-27 06:00:58,446 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 7392 transitions. Word has length 156 [2020-10-27 06:00:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:58,446 INFO L481 AbstractCegarLoop]: Abstraction has 5318 states and 7392 transitions. [2020-10-27 06:00:58,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 7392 transitions. [2020-10-27 06:00:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 06:00:58,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:58,455 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] [2020-10-27 06:00:58,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:00:58,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1744147647, now seen corresponding path program 1 times [2020-10-27 06:00:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:58,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786596497] [2020-10-27 06:00:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:03,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 06:01:03,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:01:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 06:01:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:01:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 06:01:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 06:01:04,108 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:04,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:01:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786596497] [2020-10-27 06:01:04,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:04,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:04,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186905149] [2020-10-27 06:01:04,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:04,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:04,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:04,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:04,236 INFO L87 Difference]: Start difference. First operand 5318 states and 7392 transitions. Second operand 5 states. [2020-10-27 06:01:07,273 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:01:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:08,785 INFO L93 Difference]: Finished difference Result 15501 states and 21431 transitions. [2020-10-27 06:01:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:01:08,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 06:01:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:08,830 INFO L225 Difference]: With dead ends: 15501 [2020-10-27 06:01:08,830 INFO L226 Difference]: Without dead ends: 10286 [2020-10-27 06:01:08,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:01:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2020-10-27 06:01:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 10259. [2020-10-27 06:01:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10259 states. [2020-10-27 06:01:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 14025 transitions. [2020-10-27 06:01:09,442 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 14025 transitions. Word has length 157 [2020-10-27 06:01:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:09,442 INFO L481 AbstractCegarLoop]: Abstraction has 10259 states and 14025 transitions. [2020-10-27 06:01:09,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 14025 transitions. [2020-10-27 06:01:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 06:01:09,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:09,461 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] [2020-10-27 06:01:09,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:01:09,461 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash 726546673, now seen corresponding path program 1 times [2020-10-27 06:01:09,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:09,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715393359] [2020-10-27 06:01:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:14,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:01:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 06:01:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:15,043 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715393359] [2020-10-27 06:01:15,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:15,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:15,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424863161] [2020-10-27 06:01:15,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:15,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:15,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:15,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:15,135 INFO L87 Difference]: Start difference. First operand 10259 states and 14025 transitions. Second operand 5 states. [2020-10-27 06:01:18,115 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:01:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:19,764 INFO L93 Difference]: Finished difference Result 29982 states and 40774 transitions. [2020-10-27 06:01:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:01:19,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-27 06:01:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:19,822 INFO L225 Difference]: With dead ends: 29982 [2020-10-27 06:01:19,822 INFO L226 Difference]: Without dead ends: 19739 [2020-10-27 06:01:19,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:01:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19739 states. [2020-10-27 06:01:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19739 to 19718. [2020-10-27 06:01:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19718 states. [2020-10-27 06:01:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19718 states to 19718 states and 26485 transitions. [2020-10-27 06:01:20,845 INFO L78 Accepts]: Start accepts. Automaton has 19718 states and 26485 transitions. Word has length 158 [2020-10-27 06:01:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:20,845 INFO L481 AbstractCegarLoop]: Abstraction has 19718 states and 26485 transitions. [2020-10-27 06:01:20,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 19718 states and 26485 transitions. [2020-10-27 06:01:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 06:01:20,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:20,880 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] [2020-10-27 06:01:20,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:01:20,881 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1025899071, now seen corresponding path program 1 times [2020-10-27 06:01:20,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:20,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518546943] [2020-10-27 06:01:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:01:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 06:01:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:26,431 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:26,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518546943] [2020-10-27 06:01:26,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:26,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:26,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136370636] [2020-10-27 06:01:26,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:26,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:26,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:26,501 INFO L87 Difference]: Start difference. First operand 19718 states and 26485 transitions. Second operand 5 states. [2020-10-27 06:01:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:29,163 INFO L93 Difference]: Finished difference Result 32000 states and 43060 transitions. [2020-10-27 06:01:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:01:29,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 06:01:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:29,192 INFO L225 Difference]: With dead ends: 32000 [2020-10-27 06:01:29,192 INFO L226 Difference]: Without dead ends: 12716 [2020-10-27 06:01:29,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:01:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2020-10-27 06:01:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12716. [2020-10-27 06:01:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12716 states. [2020-10-27 06:01:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12716 states to 12716 states and 17051 transitions. [2020-10-27 06:01:29,906 INFO L78 Accepts]: Start accepts. Automaton has 12716 states and 17051 transitions. Word has length 159 [2020-10-27 06:01:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:29,906 INFO L481 AbstractCegarLoop]: Abstraction has 12716 states and 17051 transitions. [2020-10-27 06:01:29,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 12716 states and 17051 transitions. [2020-10-27 06:01:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 06:01:29,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:29,922 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] [2020-10-27 06:01:29,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:01:29,923 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:29,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1630084700, now seen corresponding path program 1 times [2020-10-27 06:01:29,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:29,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564759883] [2020-10-27 06:01:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:34,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:01:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 06:01:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:35,586 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:35,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:35,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:35,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:35,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:01:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:35,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564759883] [2020-10-27 06:01:35,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:35,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:01:35,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869380613] [2020-10-27 06:01:35,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:01:35,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:35,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:01:35,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:01:35,686 INFO L87 Difference]: Start difference. First operand 12716 states and 17051 transitions. Second operand 9 states. [2020-10-27 06:01:36,242 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:01:39,390 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-27 06:01:39,944 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:01:41,858 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:01:42,400 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 06:01:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:43,065 INFO L93 Difference]: Finished difference Result 40938 states and 57367 transitions. [2020-10-27 06:01:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:01:43,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-10-27 06:01:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:43,137 INFO L225 Difference]: With dead ends: 40938 [2020-10-27 06:01:43,137 INFO L226 Difference]: Without dead ends: 31217 [2020-10-27 06:01:43,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 06:01:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31217 states. [2020-10-27 06:01:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31217 to 18636. [2020-10-27 06:01:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18636 states. [2020-10-27 06:01:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18636 states to 18636 states and 25155 transitions. [2020-10-27 06:01:44,387 INFO L78 Accepts]: Start accepts. Automaton has 18636 states and 25155 transitions. Word has length 163 [2020-10-27 06:01:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:44,388 INFO L481 AbstractCegarLoop]: Abstraction has 18636 states and 25155 transitions. [2020-10-27 06:01:44,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:01:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18636 states and 25155 transitions. [2020-10-27 06:01:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 06:01:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:44,407 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] [2020-10-27 06:01:44,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:01:44,407 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:44,408 INFO L82 PathProgramCache]: Analyzing trace with hash -956868324, now seen corresponding path program 1 times [2020-10-27 06:01:44,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:44,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415457029] [2020-10-27 06:01:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:44,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:01:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:49,980 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:50,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415457029] [2020-10-27 06:01:50,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:50,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:50,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51618386] [2020-10-27 06:01:50,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:50,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:50,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:50,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:50,029 INFO L87 Difference]: Start difference. First operand 18636 states and 25155 transitions. Second operand 5 states. [2020-10-27 06:01:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:52,941 INFO L93 Difference]: Finished difference Result 30445 states and 41244 transitions. [2020-10-27 06:01:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:01:52,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-27 06:01:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:52,964 INFO L225 Difference]: With dead ends: 30445 [2020-10-27 06:01:52,964 INFO L226 Difference]: Without dead ends: 14954 [2020-10-27 06:01:52,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:01:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14954 states. [2020-10-27 06:01:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14954 to 14954. [2020-10-27 06:01:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14954 states. [2020-10-27 06:01:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 20140 transitions. [2020-10-27 06:01:53,964 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 20140 transitions. Word has length 163 [2020-10-27 06:01:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:53,964 INFO L481 AbstractCegarLoop]: Abstraction has 14954 states and 20140 transitions. [2020-10-27 06:01:53,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 20140 transitions. [2020-10-27 06:01:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 06:01:53,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:53,976 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] [2020-10-27 06:01:53,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:01:53,976 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2068235638, now seen corresponding path program 1 times [2020-10-27 06:01:53,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:53,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719609673] [2020-10-27 06:01:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:59,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 06:01:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:01:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:59,523 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:59,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:59,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719609673] [2020-10-27 06:01:59,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:59,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:59,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814066814] [2020-10-27 06:01:59,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:59,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:59,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:59,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:59,570 INFO L87 Difference]: Start difference. First operand 14954 states and 20140 transitions. Second operand 5 states. [2020-10-27 06:02:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:02,013 INFO L93 Difference]: Finished difference Result 24642 states and 33226 transitions. [2020-10-27 06:02:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:02:02,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 06:02:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:02,030 INFO L225 Difference]: With dead ends: 24642 [2020-10-27 06:02:02,030 INFO L226 Difference]: Without dead ends: 10159 [2020-10-27 06:02:02,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:02:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2020-10-27 06:02:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 10159. [2020-10-27 06:02:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10159 states. [2020-10-27 06:02:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10159 states to 10159 states and 13631 transitions. [2020-10-27 06:02:02,719 INFO L78 Accepts]: Start accepts. Automaton has 10159 states and 13631 transitions. Word has length 165 [2020-10-27 06:02:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:02,720 INFO L481 AbstractCegarLoop]: Abstraction has 10159 states and 13631 transitions. [2020-10-27 06:02:02,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 10159 states and 13631 transitions. [2020-10-27 06:02:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 06:02:02,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:02,729 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] [2020-10-27 06:02:02,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:02:02,730 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 846594143, now seen corresponding path program 1 times [2020-10-27 06:02:02,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:02,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631030568] [2020-10-27 06:02:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:02:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:08,262 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:08,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631030568] [2020-10-27 06:02:08,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:08,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:08,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745596704] [2020-10-27 06:02:08,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:08,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:08,312 INFO L87 Difference]: Start difference. First operand 10159 states and 13631 transitions. Second operand 5 states. [2020-10-27 06:02:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:10,604 INFO L93 Difference]: Finished difference Result 17542 states and 23600 transitions. [2020-10-27 06:02:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:02:10,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-27 06:02:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:10,616 INFO L225 Difference]: With dead ends: 17542 [2020-10-27 06:02:10,616 INFO L226 Difference]: Without dead ends: 8668 [2020-10-27 06:02:10,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:02:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2020-10-27 06:02:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8668. [2020-10-27 06:02:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8668 states. [2020-10-27 06:02:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 11617 transitions. [2020-10-27 06:02:11,247 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 11617 transitions. Word has length 169 [2020-10-27 06:02:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:11,248 INFO L481 AbstractCegarLoop]: Abstraction has 8668 states and 11617 transitions. [2020-10-27 06:02:11,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:11,248 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 11617 transitions. [2020-10-27 06:02:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 06:02:11,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:11,254 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] [2020-10-27 06:02:11,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:02:11,254 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:11,255 INFO L82 PathProgramCache]: Analyzing trace with hash -960622669, now seen corresponding path program 1 times [2020-10-27 06:02:11,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:11,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637306613] [2020-10-27 06:02:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:02:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:16,846 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:16,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:16,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637306613] [2020-10-27 06:02:16,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:16,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:16,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665584716] [2020-10-27 06:02:16,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:16,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:16,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:16,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:16,938 INFO L87 Difference]: Start difference. First operand 8668 states and 11617 transitions. Second operand 9 states. [2020-10-27 06:02:17,514 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:02:20,616 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-27 06:02:21,167 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:02:23,071 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:02:23,598 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 06:02:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:24,196 INFO L93 Difference]: Finished difference Result 28949 states and 39941 transitions. [2020-10-27 06:02:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:02:24,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-10-27 06:02:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:24,223 INFO L225 Difference]: With dead ends: 28949 [2020-10-27 06:02:24,223 INFO L226 Difference]: Without dead ends: 21638 [2020-10-27 06:02:24,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:02:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21638 states. [2020-10-27 06:02:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21638 to 12952. [2020-10-27 06:02:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12952 states. [2020-10-27 06:02:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12952 states to 12952 states and 17247 transitions. [2020-10-27 06:02:25,194 INFO L78 Accepts]: Start accepts. Automaton has 12952 states and 17247 transitions. Word has length 170 [2020-10-27 06:02:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:25,195 INFO L481 AbstractCegarLoop]: Abstraction has 12952 states and 17247 transitions. [2020-10-27 06:02:25,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:02:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12952 states and 17247 transitions. [2020-10-27 06:02:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 06:02:25,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:25,203 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] [2020-10-27 06:02:25,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:02:25,204 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:25,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1954214793, now seen corresponding path program 1 times [2020-10-27 06:02:25,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:25,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958957729] [2020-10-27 06:02:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:26,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 06:02:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:30,806 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:02:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:30,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958957729] [2020-10-27 06:02:30,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:30,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:30,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953926284] [2020-10-27 06:02:30,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:30,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:30,962 INFO L87 Difference]: Start difference. First operand 12952 states and 17247 transitions. Second operand 9 states. [2020-10-27 06:02:31,498 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:02:34,475 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-27 06:02:35,071 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:02:36,880 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:02:37,396 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 06:02:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:38,644 INFO L93 Difference]: Finished difference Result 42597 states and 57982 transitions. [2020-10-27 06:02:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:02:38,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-10-27 06:02:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:38,674 INFO L225 Difference]: With dead ends: 42597 [2020-10-27 06:02:38,674 INFO L226 Difference]: Without dead ends: 30684 [2020-10-27 06:02:38,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:02:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30684 states. [2020-10-27 06:02:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30684 to 15662. [2020-10-27 06:02:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15662 states. [2020-10-27 06:02:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15662 states to 15662 states and 20549 transitions. [2020-10-27 06:02:39,940 INFO L78 Accepts]: Start accepts. Automaton has 15662 states and 20549 transitions. Word has length 170 [2020-10-27 06:02:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:39,940 INFO L481 AbstractCegarLoop]: Abstraction has 15662 states and 20549 transitions. [2020-10-27 06:02:39,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:02:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 15662 states and 20549 transitions. [2020-10-27 06:02:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 06:02:39,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:39,948 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] [2020-10-27 06:02:39,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:02:39,948 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:39,949 INFO L82 PathProgramCache]: Analyzing trace with hash -985429768, now seen corresponding path program 1 times [2020-10-27 06:02:39,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:39,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676828523] [2020-10-27 06:02:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:44,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:44,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 06:02:44,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 06:02:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:45,459 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:45,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:45,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:45,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676828523] [2020-10-27 06:02:45,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:45,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:45,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957913162] [2020-10-27 06:02:45,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:45,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:45,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:45,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:45,510 INFO L87 Difference]: Start difference. First operand 15662 states and 20549 transitions. Second operand 5 states. [2020-10-27 06:02:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:49,865 INFO L93 Difference]: Finished difference Result 26773 states and 35172 transitions. [2020-10-27 06:02:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:02:49,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 06:02:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:49,880 INFO L225 Difference]: With dead ends: 26773 [2020-10-27 06:02:49,880 INFO L226 Difference]: Without dead ends: 15686 [2020-10-27 06:02:49,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:02:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15686 states. [2020-10-27 06:02:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15686 to 15652. [2020-10-27 06:02:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15652 states. [2020-10-27 06:02:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15652 states to 15652 states and 20531 transitions. [2020-10-27 06:02:51,110 INFO L78 Accepts]: Start accepts. Automaton has 15652 states and 20531 transitions. Word has length 170 [2020-10-27 06:02:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:51,110 INFO L481 AbstractCegarLoop]: Abstraction has 15652 states and 20531 transitions. [2020-10-27 06:02:51,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15652 states and 20531 transitions. [2020-10-27 06:02:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 06:02:51,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:51,118 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] [2020-10-27 06:02:51,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:02:51,119 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -966754214, now seen corresponding path program 1 times [2020-10-27 06:02:51,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:51,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539590301] [2020-10-27 06:02:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:56,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 06:02:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:56,686 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:02:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:56,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539590301] [2020-10-27 06:02:56,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:56,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:56,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953083873] [2020-10-27 06:02:56,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:56,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:56,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:56,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:56,765 INFO L87 Difference]: Start difference. First operand 15652 states and 20531 transitions. Second operand 9 states. [2020-10-27 06:02:57,283 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:03:00,467 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2020-10-27 06:03:01,010 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:03:02,961 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 06:03:03,526 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-27 06:03:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:05,114 INFO L93 Difference]: Finished difference Result 43897 states and 58698 transitions. [2020-10-27 06:03:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:03:05,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-10-27 06:03:05,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:05,146 INFO L225 Difference]: With dead ends: 43897 [2020-10-27 06:03:05,146 INFO L226 Difference]: Without dead ends: 34705 [2020-10-27 06:03:05,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:03:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34705 states. [2020-10-27 06:03:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34705 to 20473. [2020-10-27 06:03:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20473 states. [2020-10-27 06:03:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20473 states to 20473 states and 26764 transitions. [2020-10-27 06:03:06,908 INFO L78 Accepts]: Start accepts. Automaton has 20473 states and 26764 transitions. Word has length 171 [2020-10-27 06:03:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:06,909 INFO L481 AbstractCegarLoop]: Abstraction has 20473 states and 26764 transitions. [2020-10-27 06:03:06,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:03:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 20473 states and 26764 transitions. [2020-10-27 06:03:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 06:03:06,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:06,921 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] [2020-10-27 06:03:06,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:03:06,921 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash -827743046, now seen corresponding path program 1 times [2020-10-27 06:03:06,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:06,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909254572] [2020-10-27 06:03:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:03:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 06:03:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 06:03:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:08,950 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:03:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:08,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:09,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909254572] [2020-10-27 06:03:09,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:09,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:03:09,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339101300] [2020-10-27 06:03:09,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:03:09,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:03:09,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:03:09,160 INFO L87 Difference]: Start difference. First operand 20473 states and 26764 transitions. Second operand 4 states. [2020-10-27 06:03:09,709 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 06:03:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:14,947 INFO L93 Difference]: Finished difference Result 43736 states and 59817 transitions. [2020-10-27 06:03:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:03:14,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-27 06:03:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:14,988 INFO L225 Difference]: With dead ends: 43736 [2020-10-27 06:03:14,988 INFO L226 Difference]: Without dead ends: 34127 [2020-10-27 06:03:15,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34127 states. [2020-10-27 06:03:18,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34127 to 34124. [2020-10-27 06:03:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34124 states. [2020-10-27 06:03:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34124 states to 34124 states and 45357 transitions. [2020-10-27 06:03:18,237 INFO L78 Accepts]: Start accepts. Automaton has 34124 states and 45357 transitions. Word has length 171 [2020-10-27 06:03:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:18,237 INFO L481 AbstractCegarLoop]: Abstraction has 34124 states and 45357 transitions. [2020-10-27 06:03:18,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:03:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34124 states and 45357 transitions. [2020-10-27 06:03:18,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 06:03:18,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:18,256 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] [2020-10-27 06:03:18,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:03:18,256 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:18,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1740962216, now seen corresponding path program 1 times [2020-10-27 06:03:18,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:18,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398076073] [2020-10-27 06:03:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:19,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:03:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 06:03:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:03:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:20,188 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:03:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:20,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:20,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:03:20,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:20,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398076073] [2020-10-27 06:03:20,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:20,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:03:20,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549303826] [2020-10-27 06:03:20,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:03:20,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:03:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:03:20,259 INFO L87 Difference]: Start difference. First operand 34124 states and 45357 transitions. Second operand 4 states. [2020-10-27 06:03:20,747 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 06:03:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:28,714 INFO L93 Difference]: Finished difference Result 78178 states and 108156 transitions. [2020-10-27 06:03:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:03:28,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-27 06:03:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:28,779 INFO L225 Difference]: With dead ends: 78178 [2020-10-27 06:03:28,779 INFO L226 Difference]: Without dead ends: 61188 [2020-10-27 06:03:28,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61188 states. [2020-10-27 06:03:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61188 to 61027. [2020-10-27 06:03:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61027 states. [2020-10-27 06:03:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61027 states to 61027 states and 82228 transitions. [2020-10-27 06:03:34,961 INFO L78 Accepts]: Start accepts. Automaton has 61027 states and 82228 transitions. Word has length 171 [2020-10-27 06:03:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:34,962 INFO L481 AbstractCegarLoop]: Abstraction has 61027 states and 82228 transitions. [2020-10-27 06:03:34,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:03:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 61027 states and 82228 transitions. [2020-10-27 06:03:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 06:03:34,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:34,990 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] [2020-10-27 06:03:34,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:03:34,990 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1730465151, now seen corresponding path program 1 times [2020-10-27 06:03:34,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:34,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602562555] [2020-10-27 06:03:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:03:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:36,569 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:03:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:36,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602562555] [2020-10-27 06:03:36,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:36,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:03:36,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103992898] [2020-10-27 06:03:36,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:03:36,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:36,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:03:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:03:36,616 INFO L87 Difference]: Start difference. First operand 61027 states and 82228 transitions. Second operand 4 states. [2020-10-27 06:03:43,277 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 06:03:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:48,262 INFO L93 Difference]: Finished difference Result 139984 states and 191199 transitions. [2020-10-27 06:03:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:03:48,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-27 06:03:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:48,373 INFO L225 Difference]: With dead ends: 139984 [2020-10-27 06:03:48,373 INFO L226 Difference]: Without dead ends: 80724 [2020-10-27 06:03:48,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80724 states.