/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_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:03:04,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:03:04,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:03:04,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:03:04,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:03:04,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:03:04,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:03:04,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:03:04,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:03:04,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:03:04,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:03:04,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:03:04,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:03:04,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:03:04,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:03:04,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:03:04,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:03:04,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:03:04,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:03:04,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:03:04,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:03:04,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:03:04,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:03:04,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:03:04,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:03:04,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:03:04,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:03:04,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:03:04,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:03:04,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:03:04,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:03:04,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:03:04,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:03:04,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:03:04,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:03:04,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:03:04,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:03:04,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:03:04,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:03:04,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:03:04,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:03:04,454 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 05:03:04,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:03:04,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:03:04,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:03:04,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:03:04,483 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:03:04,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:03:04,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:03:04,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:03:04,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:03:04,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:03:04,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:03:04,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:03:04,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:03:04,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:03:04,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:03:04,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:03:04,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:03:04,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:03:04,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:03:04,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:03:04,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:03:04,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:03:04,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:03:04,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:03:04,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:03:04,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:03:04,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:03:04,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:03:04,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:03:04,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:03:04,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:03:04,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:03:04,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:03:04,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:03:04,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:03:04,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 05:03:05,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d5d42e3/a21be6117afc4d208497ac28ddeb437e/FLAG82320980e [2020-10-27 05:03:05,833 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:03:05,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 05:03:05,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d5d42e3/a21be6117afc4d208497ac28ddeb437e/FLAG82320980e [2020-10-27 05:03:06,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d5d42e3/a21be6117afc4d208497ac28ddeb437e [2020-10-27 05:03:06,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:03:06,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:03:06,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:06,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:03:06,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:03:06,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:06" (1/1) ... [2020-10-27 05:03:06,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2955b2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:06, skipping insertion in model container [2020-10-27 05:03:06,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:06" (1/1) ... [2020-10-27 05:03:06,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:03:06,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:03:07,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:07,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:03:07,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:07,859 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:03:07,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07 WrapperNode [2020-10-27 05:03:07,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:07,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:03:07,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:03:07,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:03:07,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:07,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:07,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:07,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:08,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:08,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:08,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (1/1) ... [2020-10-27 05:03:08,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:03:08,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:03:08,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:03:08,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:03:08,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (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 05:03:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:03:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:03:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:03:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:03:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:03:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:03:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:03:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:03:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:03:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:03:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:03:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:03:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:03:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:03:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:03:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:03:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:03:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:03:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:03:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:03:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:03:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:03:10,847 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:03:10,848 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:03:10,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:10 BoogieIcfgContainer [2020-10-27 05:03:10,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:03:10,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:03:10,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:03:10,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:03:10,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:03:06" (1/3) ... [2020-10-27 05:03:10,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202273dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:10, skipping insertion in model container [2020-10-27 05:03:10,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:07" (2/3) ... [2020-10-27 05:03:10,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202273dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:10, skipping insertion in model container [2020-10-27 05:03:10,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:10" (3/3) ... [2020-10-27 05:03:10,861 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 05:03:10,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:03:10,881 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:03:10,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:03:10,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:03:10,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:03:10,932 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:03:10,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:03:10,932 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:03:10,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:03:10,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:03:10,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:03:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states. [2020-10-27 05:03:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-27 05:03:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:11,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:11,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2113566534, now seen corresponding path program 1 times [2020-10-27 05:03:11,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:11,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035314586] [2020-10-27 05:03:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:17,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:17,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 05:03:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:03:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 05:03:17,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:03:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:03:18,290 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:03:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:18,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:18,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 05:03:18,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:18,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:18,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:18,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:18,611 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 05:03:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035314586] [2020-10-27 05:03:18,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:18,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:18,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164582303] [2020-10-27 05:03:18,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:18,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:18,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:18,642 INFO L87 Difference]: Start difference. First operand 712 states. Second operand 5 states. [2020-10-27 05:03:26,855 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:03:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:28,758 INFO L93 Difference]: Finished difference Result 2081 states and 3715 transitions. [2020-10-27 05:03:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:03:28,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-27 05:03:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:28,798 INFO L225 Difference]: With dead ends: 2081 [2020-10-27 05:03:28,800 INFO L226 Difference]: Without dead ends: 1378 [2020-10-27 05:03:28,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-10-27 05:03:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1375. [2020-10-27 05:03:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-27 05:03:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2123 transitions. [2020-10-27 05:03:29,037 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2123 transitions. Word has length 305 [2020-10-27 05:03:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:29,041 INFO L481 AbstractCegarLoop]: Abstraction has 1375 states and 2123 transitions. [2020-10-27 05:03:29,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2123 transitions. [2020-10-27 05:03:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-27 05:03:29,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:29,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:03:29,060 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1421113193, now seen corresponding path program 1 times [2020-10-27 05:03:29,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:29,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561645848] [2020-10-27 05:03:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-27 05:03:34,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:03:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 05:03:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 05:03:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:35,158 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:03:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:35,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:35,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:03:35,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:35,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:35,496 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 05:03:35,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561645848] [2020-10-27 05:03:35,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:35,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:35,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167029122] [2020-10-27 05:03:35,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:35,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:35,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:35,504 INFO L87 Difference]: Start difference. First operand 1375 states and 2123 transitions. Second operand 5 states. [2020-10-27 05:03:42,367 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:03:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:44,088 INFO L93 Difference]: Finished difference Result 3953 states and 6078 transitions. [2020-10-27 05:03:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:44,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-27 05:03:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:44,105 INFO L225 Difference]: With dead ends: 3953 [2020-10-27 05:03:44,105 INFO L226 Difference]: Without dead ends: 2650 [2020-10-27 05:03:44,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2020-10-27 05:03:44,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2647. [2020-10-27 05:03:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-10-27 05:03:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4050 transitions. [2020-10-27 05:03:44,257 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4050 transitions. Word has length 307 [2020-10-27 05:03:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:44,258 INFO L481 AbstractCegarLoop]: Abstraction has 2647 states and 4050 transitions. [2020-10-27 05:03:44,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4050 transitions. [2020-10-27 05:03:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 05:03:44,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:44,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:44,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:03:44,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:44,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1865975737, now seen corresponding path program 1 times [2020-10-27 05:03:44,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:44,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173261190] [2020-10-27 05:03:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 05:03:49,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:03:49,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:03:49,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:49,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 05:03:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:03:50,213 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:03:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:50,475 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 05:03:50,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173261190] [2020-10-27 05:03:50,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:50,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:50,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981605450] [2020-10-27 05:03:50,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:50,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:50,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:50,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:50,480 INFO L87 Difference]: Start difference. First operand 2647 states and 4050 transitions. Second operand 5 states. [2020-10-27 05:03:57,043 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:03:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:58,699 INFO L93 Difference]: Finished difference Result 7840 states and 11988 transitions. [2020-10-27 05:03:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:58,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-27 05:03:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:58,729 INFO L225 Difference]: With dead ends: 7840 [2020-10-27 05:03:58,731 INFO L226 Difference]: Without dead ends: 5213 [2020-10-27 05:03:58,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-10-27 05:03:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5210. [2020-10-27 05:03:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5210 states. [2020-10-27 05:03:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 7921 transitions. [2020-10-27 05:03:59,001 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 7921 transitions. Word has length 309 [2020-10-27 05:03:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:59,005 INFO L481 AbstractCegarLoop]: Abstraction has 5210 states and 7921 transitions. [2020-10-27 05:03:59,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 7921 transitions. [2020-10-27 05:03:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:03:59,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:59,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:59,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:03:59,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:59,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2085024783, now seen corresponding path program 1 times [2020-10-27 05:03:59,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:59,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963363032] [2020-10-27 05:03:59,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 05:04:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 05:04:05,102 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:05,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:05,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:04:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:05,334 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 05:04:05,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963363032] [2020-10-27 05:04:05,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:05,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:05,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400497932] [2020-10-27 05:04:05,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:05,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:05,337 INFO L87 Difference]: Start difference. First operand 5210 states and 7921 transitions. Second operand 5 states. [2020-10-27 05:04:12,609 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:04:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:14,593 INFO L93 Difference]: Finished difference Result 14999 states and 22696 transitions. [2020-10-27 05:04:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:14,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:04:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:14,649 INFO L225 Difference]: With dead ends: 14999 [2020-10-27 05:04:14,649 INFO L226 Difference]: Without dead ends: 10204 [2020-10-27 05:04:14,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10204 states. [2020-10-27 05:04:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10204 to 10201. [2020-10-27 05:04:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10201 states. [2020-10-27 05:04:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 15404 transitions. [2020-10-27 05:04:15,331 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 15404 transitions. Word has length 311 [2020-10-27 05:04:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:15,332 INFO L481 AbstractCegarLoop]: Abstraction has 10201 states and 15404 transitions. [2020-10-27 05:04:15,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 15404 transitions. [2020-10-27 05:04:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:04:15,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:15,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:15,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:04:15,358 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:15,359 INFO L82 PathProgramCache]: Analyzing trace with hash 41120218, now seen corresponding path program 1 times [2020-10-27 05:04:15,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:15,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192563991] [2020-10-27 05:04:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:20,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:20,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:04:20,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 05:04:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:21,285 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:21,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:21,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:21,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:04:21,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:21,474 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 05:04:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192563991] [2020-10-27 05:04:21,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:21,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:21,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229739839] [2020-10-27 05:04:21,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:21,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:21,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:21,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:21,476 INFO L87 Difference]: Start difference. First operand 10201 states and 15404 transitions. Second operand 5 states. [2020-10-27 05:04:29,319 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:04:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:31,670 INFO L93 Difference]: Finished difference Result 29385 states and 44122 transitions. [2020-10-27 05:04:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:31,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 05:04:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:31,735 INFO L225 Difference]: With dead ends: 29385 [2020-10-27 05:04:31,736 INFO L226 Difference]: Without dead ends: 19942 [2020-10-27 05:04:31,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19942 states. [2020-10-27 05:04:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19942 to 19939. [2020-10-27 05:04:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19939 states. [2020-10-27 05:04:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19939 states to 19939 states and 29886 transitions. [2020-10-27 05:04:33,054 INFO L78 Accepts]: Start accepts. Automaton has 19939 states and 29886 transitions. Word has length 313 [2020-10-27 05:04:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:33,054 INFO L481 AbstractCegarLoop]: Abstraction has 19939 states and 29886 transitions. [2020-10-27 05:04:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19939 states and 29886 transitions. [2020-10-27 05:04:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 05:04:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:33,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:33,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:04:33,100 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:33,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1723912462, now seen corresponding path program 1 times [2020-10-27 05:04:33,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:33,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519426632] [2020-10-27 05:04:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:38,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:38,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 05:04:38,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 05:04:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:39,077 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:39,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:39,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:04:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:39,274 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 05:04:39,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519426632] [2020-10-27 05:04:39,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:39,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:39,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868271461] [2020-10-27 05:04:39,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:39,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:39,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:39,277 INFO L87 Difference]: Start difference. First operand 19939 states and 29886 transitions. Second operand 5 states. [2020-10-27 05:04:47,380 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:04:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:49,533 INFO L93 Difference]: Finished difference Result 58642 states and 87705 transitions. [2020-10-27 05:04:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:49,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 05:04:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:49,627 INFO L225 Difference]: With dead ends: 58642 [2020-10-27 05:04:49,627 INFO L226 Difference]: Without dead ends: 39005 [2020-10-27 05:04:49,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39005 states. [2020-10-27 05:04:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39005 to 39002. [2020-10-27 05:04:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39002 states. [2020-10-27 05:04:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39002 states to 39002 states and 57926 transitions. [2020-10-27 05:04:52,104 INFO L78 Accepts]: Start accepts. Automaton has 39002 states and 57926 transitions. Word has length 315 [2020-10-27 05:04:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:52,105 INFO L481 AbstractCegarLoop]: Abstraction has 39002 states and 57926 transitions. [2020-10-27 05:04:52,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 39002 states and 57926 transitions. [2020-10-27 05:04:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 05:04:52,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:52,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:52,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:04:52,161 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:52,162 INFO L82 PathProgramCache]: Analyzing trace with hash 687108745, now seen corresponding path program 1 times [2020-10-27 05:04:52,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:52,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019086499] [2020-10-27 05:04:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:52,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 05:04:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:58,077 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:58,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:58,234 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 05:04:58,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019086499] [2020-10-27 05:04:58,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:58,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:58,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947465874] [2020-10-27 05:04:58,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:58,237 INFO L87 Difference]: Start difference. First operand 39002 states and 57926 transitions. Second operand 5 states. [2020-10-27 05:05:08,848 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:05:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:11,976 INFO L93 Difference]: Finished difference Result 113048 states and 167298 transitions. [2020-10-27 05:05:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:11,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 05:05:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:12,133 INFO L225 Difference]: With dead ends: 113048 [2020-10-27 05:05:12,133 INFO L226 Difference]: Without dead ends: 75925 [2020-10-27 05:05:12,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75925 states. [2020-10-27 05:05:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75925 to 75922. [2020-10-27 05:05:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75922 states. [2020-10-27 05:05:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75922 states to 75922 states and 111790 transitions. [2020-10-27 05:05:17,776 INFO L78 Accepts]: Start accepts. Automaton has 75922 states and 111790 transitions. Word has length 317 [2020-10-27 05:05:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:17,777 INFO L481 AbstractCegarLoop]: Abstraction has 75922 states and 111790 transitions. [2020-10-27 05:05:17,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 75922 states and 111790 transitions. [2020-10-27 05:05:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 05:05:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:17,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:17,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:05:17,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash 723423827, now seen corresponding path program 1 times [2020-10-27 05:05:17,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:17,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183036495] [2020-10-27 05:05:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:22,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:05:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:23,735 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:23,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:23,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:23,964 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 05:05:23,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183036495] [2020-10-27 05:05:23,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:23,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:23,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860323652] [2020-10-27 05:05:23,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:23,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:23,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:23,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:23,967 INFO L87 Difference]: Start difference. First operand 75922 states and 111790 transitions. Second operand 5 states. [2020-10-27 05:05:39,581 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:05:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:44,250 INFO L93 Difference]: Finished difference Result 222182 states and 325957 transitions. [2020-10-27 05:05:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:44,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 05:05:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:44,506 INFO L225 Difference]: With dead ends: 222182 [2020-10-27 05:05:44,506 INFO L226 Difference]: Without dead ends: 149379 [2020-10-27 05:05:44,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149379 states. [2020-10-27 05:05:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149379 to 149376. [2020-10-27 05:05:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149376 states. [2020-10-27 05:05:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149376 states to 149376 states and 218307 transitions. [2020-10-27 05:05:56,182 INFO L78 Accepts]: Start accepts. Automaton has 149376 states and 218307 transitions. Word has length 319 [2020-10-27 05:05:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:56,183 INFO L481 AbstractCegarLoop]: Abstraction has 149376 states and 218307 transitions. [2020-10-27 05:05:56,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 149376 states and 218307 transitions. [2020-10-27 05:05:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 05:05:56,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:56,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:56,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:05:56,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1505754697, now seen corresponding path program 1 times [2020-10-27 05:05:56,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:56,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153186570] [2020-10-27 05:05:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 05:06:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:02,555 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:06:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:02,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:02,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:02,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:06:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:02,779 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 05:06:02,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153186570] [2020-10-27 05:06:02,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:02,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:02,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724072072] [2020-10-27 05:06:02,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:02,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:02,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:02,781 INFO L87 Difference]: Start difference. First operand 149376 states and 218307 transitions. Second operand 5 states. [2020-10-27 05:06:28,647 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 05:06:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:37,198 INFO L93 Difference]: Finished difference Result 431910 states and 628025 transitions. [2020-10-27 05:06:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:37,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 05:06:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:37,947 INFO L225 Difference]: With dead ends: 431910 [2020-10-27 05:06:37,947 INFO L226 Difference]: Without dead ends: 290787 [2020-10-27 05:06:38,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290787 states.