/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.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:53:10,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:53:10,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:53:10,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:53:10,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:53:10,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:53:10,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:53:10,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:53:10,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:53:10,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:53:10,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:53:10,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:53:10,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:53:10,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:53:10,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:53:10,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:53:10,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:53:10,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:53:10,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:53:10,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:53:10,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:53:10,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:53:10,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:53:10,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:53:10,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:53:10,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:53:10,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:53:10,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:53:10,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:53:10,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:53:10,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:53:10,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:53:10,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:53:10,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:53:10,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:53:10,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:53:10,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:53:10,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:53:10,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:53:10,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:53:10,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:53:10,288 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 04:53:10,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:53:10,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:53:10,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:53:10,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:53:10,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:53:10,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:53:10,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:53:10,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:53:10,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:53:10,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:53:10,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:53:10,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:53:10,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:53:10,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:53:10,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:53:10,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:53:10,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:53:10,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:53:10,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:53:10,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:53:10,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:53:10,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:53:10,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:53:10,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:53:10,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:53:10,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:53:10,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:53:10,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:53:10,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:53:10,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:53:10,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:53:10,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:53:10,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:53:10,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:53:10,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:53:10,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:53:11,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa34707a/8d41f73d9a7b4645b1fc47a7a35525b8/FLAGf434b251e [2020-10-27 04:53:11,745 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:53:11,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:53:11,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa34707a/8d41f73d9a7b4645b1fc47a7a35525b8/FLAGf434b251e [2020-10-27 04:53:12,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa34707a/8d41f73d9a7b4645b1fc47a7a35525b8 [2020-10-27 04:53:12,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:53:12,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:53:12,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:12,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:53:12,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:53:12,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19065848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12, skipping insertion in model container [2020-10-27 04:53:12,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:53:12,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:53:12,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:12,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:53:12,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:53:12,671 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:53:12,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12 WrapperNode [2020-10-27 04:53:12,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:53:12,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:53:12,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:53:12,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:53:12,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (1/1) ... [2020-10-27 04:53:12,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:53:12,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:53:12,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:53:12,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:53:12,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (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 04:53:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:53:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:53:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:53:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:53:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:53:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:53:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:53:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:53:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:53:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:53:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:53:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:53:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:53:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:53:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:53:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:53:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:53:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:53:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:53:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:53:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:53:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:53:14,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:53:14,264 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:53:14,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:14 BoogieIcfgContainer [2020-10-27 04:53:14,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:53:14,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:53:14,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:53:14,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:53:14,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:53:12" (1/3) ... [2020-10-27 04:53:14,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84645d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:14, skipping insertion in model container [2020-10-27 04:53:14,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:53:12" (2/3) ... [2020-10-27 04:53:14,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84645d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:53:14, skipping insertion in model container [2020-10-27 04:53:14,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:53:14" (3/3) ... [2020-10-27 04:53:14,301 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:53:14,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:53:14,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:53:14,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:53:14,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:53:14,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:53:14,369 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:53:14,369 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:53:14,369 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:53:14,370 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:53:14,370 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:53:14,370 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:53:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2020-10-27 04:53:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:53:14,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:14,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:14,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:14,418 INFO L82 PathProgramCache]: Analyzing trace with hash 886169644, now seen corresponding path program 1 times [2020-10-27 04:53:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:14,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93940414] [2020-10-27 04:53:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:19,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:53:19,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:53:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:53:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:53:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:53:20,571 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:53:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:20,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:20,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:53:20,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:20,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:20,659 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 04:53:20,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93940414] [2020-10-27 04:53:20,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:20,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:20,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636413793] [2020-10-27 04:53:20,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:20,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:20,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:20,687 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 5 states. [2020-10-27 04:53:22,752 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:23,870 INFO L93 Difference]: Finished difference Result 653 states and 1141 transitions. [2020-10-27 04:53:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:23,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 04:53:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:23,894 INFO L225 Difference]: With dead ends: 653 [2020-10-27 04:53:23,894 INFO L226 Difference]: Without dead ends: 433 [2020-10-27 04:53:23,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-27 04:53:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2020-10-27 04:53:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-27 04:53:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 631 transitions. [2020-10-27 04:53:24,036 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 631 transitions. Word has length 100 [2020-10-27 04:53:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:24,038 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 631 transitions. [2020-10-27 04:53:24,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 631 transitions. [2020-10-27 04:53:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:53:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:24,056 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] [2020-10-27 04:53:24,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:53:24,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash -597887962, now seen corresponding path program 1 times [2020-10-27 04:53:24,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:24,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652727252] [2020-10-27 04:53:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:29,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:53:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:53:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:53:29,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 04:53:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:29,574 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:53:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:29,643 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 04:53:29,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652727252] [2020-10-27 04:53:29,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:29,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:29,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189097782] [2020-10-27 04:53:29,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:29,648 INFO L87 Difference]: Start difference. First operand 430 states and 631 transitions. Second operand 5 states. [2020-10-27 04:53:31,212 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:32,286 INFO L93 Difference]: Finished difference Result 1074 states and 1589 transitions. [2020-10-27 04:53:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:32,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 04:53:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:32,298 INFO L225 Difference]: With dead ends: 1074 [2020-10-27 04:53:32,298 INFO L226 Difference]: Without dead ends: 813 [2020-10-27 04:53:32,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-10-27 04:53:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 810. [2020-10-27 04:53:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-27 04:53:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1176 transitions. [2020-10-27 04:53:32,405 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1176 transitions. Word has length 101 [2020-10-27 04:53:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:32,405 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1176 transitions. [2020-10-27 04:53:32,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1176 transitions. [2020-10-27 04:53:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:53:32,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:32,408 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] [2020-10-27 04:53:32,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:53:32,409 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1913586095, now seen corresponding path program 1 times [2020-10-27 04:53:32,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:32,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98567525] [2020-10-27 04:53:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:37,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:37,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:53:37,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:53:37,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 04:53:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:37,875 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:53:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:53:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:37,943 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 04:53:37,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98567525] [2020-10-27 04:53:37,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:37,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:37,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086250860] [2020-10-27 04:53:37,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:37,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:37,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:37,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:37,946 INFO L87 Difference]: Start difference. First operand 810 states and 1176 transitions. Second operand 5 states. [2020-10-27 04:53:39,501 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:40,554 INFO L93 Difference]: Finished difference Result 2298 states and 3314 transitions. [2020-10-27 04:53:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:40,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 04:53:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:40,565 INFO L225 Difference]: With dead ends: 2298 [2020-10-27 04:53:40,566 INFO L226 Difference]: Without dead ends: 1545 [2020-10-27 04:53:40,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:40,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-10-27 04:53:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1542. [2020-10-27 04:53:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-10-27 04:53:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2210 transitions. [2020-10-27 04:53:40,704 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2210 transitions. Word has length 102 [2020-10-27 04:53:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:40,705 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2210 transitions. [2020-10-27 04:53:40,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2210 transitions. [2020-10-27 04:53:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:53:40,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:40,709 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] [2020-10-27 04:53:40,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:53:40,710 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1766450488, now seen corresponding path program 1 times [2020-10-27 04:53:40,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:40,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389372855] [2020-10-27 04:53:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:53:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:46,238 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:53:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:46,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:46,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:53:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:46,337 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 04:53:46,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389372855] [2020-10-27 04:53:46,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:46,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:46,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761322674] [2020-10-27 04:53:46,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:46,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:46,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:46,340 INFO L87 Difference]: Start difference. First operand 1542 states and 2210 transitions. Second operand 5 states. [2020-10-27 04:53:47,982 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:49,058 INFO L93 Difference]: Finished difference Result 3903 states and 5653 transitions. [2020-10-27 04:53:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:49,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 04:53:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:49,075 INFO L225 Difference]: With dead ends: 3903 [2020-10-27 04:53:49,075 INFO L226 Difference]: Without dead ends: 2956 [2020-10-27 04:53:49,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-10-27 04:53:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2953. [2020-10-27 04:53:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2953 states. [2020-10-27 04:53:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 4181 transitions. [2020-10-27 04:53:49,364 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 4181 transitions. Word has length 103 [2020-10-27 04:53:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:49,364 INFO L481 AbstractCegarLoop]: Abstraction has 2953 states and 4181 transitions. [2020-10-27 04:53:49,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:49,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 4181 transitions. [2020-10-27 04:53:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 04:53:49,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:49,369 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] [2020-10-27 04:53:49,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:53:49,370 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:49,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1175095438, now seen corresponding path program 1 times [2020-10-27 04:53:49,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:49,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809420039] [2020-10-27 04:53:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:53:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:54,979 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:53:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:55,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:55,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:53:55,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:55,041 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 04:53:55,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809420039] [2020-10-27 04:53:55,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:55,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:55,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513435876] [2020-10-27 04:53:55,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:55,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:55,044 INFO L87 Difference]: Start difference. First operand 2953 states and 4181 transitions. Second operand 5 states. [2020-10-27 04:53:56,785 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:57,998 INFO L93 Difference]: Finished difference Result 8227 states and 11672 transitions. [2020-10-27 04:53:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:57,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-27 04:53:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:58,027 INFO L225 Difference]: With dead ends: 8227 [2020-10-27 04:53:58,028 INFO L226 Difference]: Without dead ends: 5728 [2020-10-27 04:53:58,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2020-10-27 04:53:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5725. [2020-10-27 04:53:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5725 states. [2020-10-27 04:53:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5725 states to 5725 states and 8004 transitions. [2020-10-27 04:53:58,569 INFO L78 Accepts]: Start accepts. Automaton has 5725 states and 8004 transitions. Word has length 104 [2020-10-27 04:53:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:58,570 INFO L481 AbstractCegarLoop]: Abstraction has 5725 states and 8004 transitions. [2020-10-27 04:53:58,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5725 states and 8004 transitions. [2020-10-27 04:53:58,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:53:58,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:58,579 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] [2020-10-27 04:53:58,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:53:58,579 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:58,580 INFO L82 PathProgramCache]: Analyzing trace with hash -825864249, now seen corresponding path program 1 times [2020-10-27 04:53:58,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:58,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74793769] [2020-10-27 04:53:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:54:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:54:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:04,006 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:04,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:04,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:04,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:04,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:04,061 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 04:54:04,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74793769] [2020-10-27 04:54:04,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:04,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:04,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128060261] [2020-10-27 04:54:04,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:04,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:04,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:04,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:04,063 INFO L87 Difference]: Start difference. First operand 5725 states and 8004 transitions. Second operand 5 states. [2020-10-27 04:54:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:05,553 INFO L93 Difference]: Finished difference Result 9345 states and 13028 transitions. [2020-10-27 04:54:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:05,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 04:54:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:05,570 INFO L225 Difference]: With dead ends: 9345 [2020-10-27 04:54:05,571 INFO L226 Difference]: Without dead ends: 3690 [2020-10-27 04:54:05,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2020-10-27 04:54:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3690. [2020-10-27 04:54:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3690 states. [2020-10-27 04:54:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 5134 transitions. [2020-10-27 04:54:05,958 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 5134 transitions. Word has length 105 [2020-10-27 04:54:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:05,958 INFO L481 AbstractCegarLoop]: Abstraction has 3690 states and 5134 transitions. [2020-10-27 04:54:05,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 5134 transitions. [2020-10-27 04:54:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 04:54:05,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:05,964 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] [2020-10-27 04:54:05,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:54:05,964 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:05,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1233645249, now seen corresponding path program 1 times [2020-10-27 04:54:05,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:05,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130505484] [2020-10-27 04:54:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:54:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:54:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:54:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:54:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,439 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:11,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:54:11,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,507 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 04:54:11,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130505484] [2020-10-27 04:54:11,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:11,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:11,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388973693] [2020-10-27 04:54:11,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:11,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:11,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:11,510 INFO L87 Difference]: Start difference. First operand 3690 states and 5134 transitions. Second operand 5 states. [2020-10-27 04:54:13,002 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:54:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:14,161 INFO L93 Difference]: Finished difference Result 10697 states and 14807 transitions. [2020-10-27 04:54:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:14,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 04:54:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:14,190 INFO L225 Difference]: With dead ends: 10697 [2020-10-27 04:54:14,190 INFO L226 Difference]: Without dead ends: 7062 [2020-10-27 04:54:14,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:54:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2020-10-27 04:54:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7059. [2020-10-27 04:54:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7059 states. [2020-10-27 04:54:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 9665 transitions. [2020-10-27 04:54:14,975 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 9665 transitions. Word has length 108 [2020-10-27 04:54:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:14,975 INFO L481 AbstractCegarLoop]: Abstraction has 7059 states and 9665 transitions. [2020-10-27 04:54:14,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 9665 transitions. [2020-10-27 04:54:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:54:14,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:14,987 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] [2020-10-27 04:54:14,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:54:14,988 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1089532007, now seen corresponding path program 1 times [2020-10-27 04:54:14,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:14,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855277700] [2020-10-27 04:54:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:20,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:54:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:20,426 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:54:20,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:20,480 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 04:54:20,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855277700] [2020-10-27 04:54:20,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:20,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:20,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141006189] [2020-10-27 04:54:20,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:20,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:20,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:20,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:20,483 INFO L87 Difference]: Start difference. First operand 7059 states and 9665 transitions. Second operand 5 states. [2020-10-27 04:54:20,838 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:54:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:23,482 INFO L93 Difference]: Finished difference Result 12789 states and 17403 transitions. [2020-10-27 04:54:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:54:23,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 04:54:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:23,512 INFO L225 Difference]: With dead ends: 12789 [2020-10-27 04:54:23,512 INFO L226 Difference]: Without dead ends: 7020 [2020-10-27 04:54:23,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2020-10-27 04:54:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 7017. [2020-10-27 04:54:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7017 states. [2020-10-27 04:54:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 9562 transitions. [2020-10-27 04:54:24,123 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 9562 transitions. Word has length 109 [2020-10-27 04:54:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:24,123 INFO L481 AbstractCegarLoop]: Abstraction has 7017 states and 9562 transitions. [2020-10-27 04:54:24,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 9562 transitions. [2020-10-27 04:54:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 04:54:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:24,134 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] [2020-10-27 04:54:24,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:54:24,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash 381316265, now seen corresponding path program 1 times [2020-10-27 04:54:24,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:24,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070552688] [2020-10-27 04:54:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:29,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:54:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:29,519 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:29,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:29,565 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 04:54:29,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070552688] [2020-10-27 04:54:29,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:29,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:29,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035140491] [2020-10-27 04:54:29,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:29,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:29,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:29,568 INFO L87 Difference]: Start difference. First operand 7017 states and 9562 transitions. Second operand 5 states. [2020-10-27 04:54:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:31,139 INFO L93 Difference]: Finished difference Result 12187 states and 16712 transitions. [2020-10-27 04:54:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:31,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 04:54:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:31,149 INFO L225 Difference]: With dead ends: 12187 [2020-10-27 04:54:31,149 INFO L226 Difference]: Without dead ends: 5704 [2020-10-27 04:54:31,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2020-10-27 04:54:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2020-10-27 04:54:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5704 states. [2020-10-27 04:54:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 7751 transitions. [2020-10-27 04:54:31,643 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 7751 transitions. Word has length 110 [2020-10-27 04:54:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:31,644 INFO L481 AbstractCegarLoop]: Abstraction has 5704 states and 7751 transitions. [2020-10-27 04:54:31,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 7751 transitions. [2020-10-27 04:54:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 04:54:31,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:31,652 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] [2020-10-27 04:54:31,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:54:31,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:31,653 INFO L82 PathProgramCache]: Analyzing trace with hash -652409111, now seen corresponding path program 1 times [2020-10-27 04:54:31,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:31,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073522750] [2020-10-27 04:54:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:54:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4795 [2020-10-27 04:54:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:54:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:54:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:36,848 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:36,884 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 04:54:36,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073522750] [2020-10-27 04:54:36,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:36,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:36,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825371294] [2020-10-27 04:54:36,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:36,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:36,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:36,886 INFO L87 Difference]: Start difference. First operand 5704 states and 7751 transitions. Second operand 5 states. [2020-10-27 04:54:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:38,295 INFO L93 Difference]: Finished difference Result 9283 states and 12631 transitions. [2020-10-27 04:54:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:38,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-27 04:54:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:38,303 INFO L225 Difference]: With dead ends: 9283 [2020-10-27 04:54:38,303 INFO L226 Difference]: Without dead ends: 3845 [2020-10-27 04:54:38,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-10-27 04:54:38,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2020-10-27 04:54:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3845 states. [2020-10-27 04:54:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5202 transitions. [2020-10-27 04:54:38,625 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5202 transitions. Word has length 112 [2020-10-27 04:54:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:38,625 INFO L481 AbstractCegarLoop]: Abstraction has 3845 states and 5202 transitions. [2020-10-27 04:54:38,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5202 transitions. [2020-10-27 04:54:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 04:54:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:38,630 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] [2020-10-27 04:54:38,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:54:38,630 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash 82569531, now seen corresponding path program 1 times [2020-10-27 04:54:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:38,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887038092] [2020-10-27 04:54:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:43,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:54:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:44,052 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:44,105 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 04:54:44,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887038092] [2020-10-27 04:54:44,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:44,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:44,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655676741] [2020-10-27 04:54:44,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:44,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:44,108 INFO L87 Difference]: Start difference. First operand 3845 states and 5202 transitions. Second operand 5 states. [2020-10-27 04:54:44,451 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:54:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:46,553 INFO L93 Difference]: Finished difference Result 6313 states and 8537 transitions. [2020-10-27 04:54:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:54:46,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-27 04:54:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:46,563 INFO L225 Difference]: With dead ends: 6313 [2020-10-27 04:54:46,563 INFO L226 Difference]: Without dead ends: 3842 [2020-10-27 04:54:46,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:54:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2020-10-27 04:54:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3839. [2020-10-27 04:54:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2020-10-27 04:54:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5167 transitions. [2020-10-27 04:54:46,910 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5167 transitions. Word has length 115 [2020-10-27 04:54:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:46,910 INFO L481 AbstractCegarLoop]: Abstraction has 3839 states and 5167 transitions. [2020-10-27 04:54:46,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5167 transitions. [2020-10-27 04:54:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 04:54:46,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:46,914 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] [2020-10-27 04:54:46,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:54:46,915 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1907550960, now seen corresponding path program 1 times [2020-10-27 04:54:46,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:46,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27820905] [2020-10-27 04:54:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:47,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:51,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:54:51,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:54:51,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:54:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 04:54:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:52,526 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-10-27 04:54:52,768 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-27 04:54:53,370 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:54:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:53,463 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 04:54:53,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27820905] [2020-10-27 04:54:53,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:53,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:54:53,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465387431] [2020-10-27 04:54:53,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:54:53,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:53,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:54:53,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:54:53,466 INFO L87 Difference]: Start difference. First operand 3839 states and 5167 transitions. Second operand 15 states. [2020-10-27 04:54:53,884 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:54:54,553 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 04:54:55,073 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-27 04:54:55,360 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-27 04:54:56,656 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-27 04:54:57,063 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-27 04:54:57,930 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 04:54:58,293 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 04:55:01,139 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-27 04:55:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:02,436 INFO L93 Difference]: Finished difference Result 14672 states and 21151 transitions. [2020-10-27 04:55:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:55:02,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 116 [2020-10-27 04:55:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:02,470 INFO L225 Difference]: With dead ends: 14672 [2020-10-27 04:55:02,470 INFO L226 Difference]: Without dead ends: 13559 [2020-10-27 04:55:02,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:55:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13559 states. [2020-10-27 04:55:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13559 to 5435. [2020-10-27 04:55:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5435 states. [2020-10-27 04:55:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5435 states to 5435 states and 7415 transitions. [2020-10-27 04:55:03,279 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 7415 transitions. Word has length 116 [2020-10-27 04:55:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:03,279 INFO L481 AbstractCegarLoop]: Abstraction has 5435 states and 7415 transitions. [2020-10-27 04:55:03,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:55:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 7415 transitions. [2020-10-27 04:55:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 04:55:03,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:03,284 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] [2020-10-27 04:55:03,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:55:03,285 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:03,285 INFO L82 PathProgramCache]: Analyzing trace with hash -778221492, now seen corresponding path program 1 times [2020-10-27 04:55:03,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:03,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105751128] [2020-10-27 04:55:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:55:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:04,489 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:55:04,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:04,535 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 04:55:04,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105751128] [2020-10-27 04:55:04,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:04,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:04,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613247428] [2020-10-27 04:55:04,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:04,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:04,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:04,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:04,538 INFO L87 Difference]: Start difference. First operand 5435 states and 7415 transitions. Second operand 5 states. [2020-10-27 04:55:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:06,157 INFO L93 Difference]: Finished difference Result 9656 states and 13190 transitions. [2020-10-27 04:55:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:06,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 04:55:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:06,169 INFO L225 Difference]: With dead ends: 9656 [2020-10-27 04:55:06,170 INFO L226 Difference]: Without dead ends: 4541 [2020-10-27 04:55:06,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-10-27 04:55:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2020-10-27 04:55:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-10-27 04:55:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6161 transitions. [2020-10-27 04:55:07,141 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6161 transitions. Word has length 116 [2020-10-27 04:55:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:07,141 INFO L481 AbstractCegarLoop]: Abstraction has 4541 states and 6161 transitions. [2020-10-27 04:55:07,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6161 transitions. [2020-10-27 04:55:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 04:55:07,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:07,146 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] [2020-10-27 04:55:07,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:55:07,146 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1015755655, now seen corresponding path program 1 times [2020-10-27 04:55:07,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:07,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785150123] [2020-10-27 04:55:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:55:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:12,604 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:55:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:55:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:12,695 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 04:55:12,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785150123] [2020-10-27 04:55:12,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:12,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:12,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327324805] [2020-10-27 04:55:12,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:55:12,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:12,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:55:12,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:12,698 INFO L87 Difference]: Start difference. First operand 4541 states and 6161 transitions. Second operand 6 states. [2020-10-27 04:55:13,077 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:14,379 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:55:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:15,715 INFO L93 Difference]: Finished difference Result 10117 states and 14322 transitions. [2020-10-27 04:55:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:55:15,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-27 04:55:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:15,730 INFO L225 Difference]: With dead ends: 10117 [2020-10-27 04:55:15,730 INFO L226 Difference]: Without dead ends: 6737 [2020-10-27 04:55:15,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:55:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2020-10-27 04:55:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6698. [2020-10-27 04:55:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6698 states. [2020-10-27 04:55:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6698 states to 6698 states and 9406 transitions. [2020-10-27 04:55:17,075 INFO L78 Accepts]: Start accepts. Automaton has 6698 states and 9406 transitions. Word has length 117 [2020-10-27 04:55:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:17,075 INFO L481 AbstractCegarLoop]: Abstraction has 6698 states and 9406 transitions. [2020-10-27 04:55:17,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:55:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6698 states and 9406 transitions. [2020-10-27 04:55:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 04:55:17,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:17,080 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] [2020-10-27 04:55:17,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:55:17,080 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 961842988, now seen corresponding path program 1 times [2020-10-27 04:55:17,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:17,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522633484] [2020-10-27 04:55:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3548 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:55:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:20,875 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-10-27 04:55:21,280 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:55:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:21,364 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 04:55:21,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522633484] [2020-10-27 04:55:21,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:21,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:55:21,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824705388] [2020-10-27 04:55:21,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:55:21,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:55:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:55:21,366 INFO L87 Difference]: Start difference. First operand 6698 states and 9406 transitions. Second operand 11 states. [2020-10-27 04:55:21,753 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 04:55:24,555 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 04:55:24,926 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:55:25,378 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 04:55:25,733 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:55:26,133 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 04:55:26,542 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 04:55:26,882 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:55:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:34,466 INFO L93 Difference]: Finished difference Result 39676 states and 59687 transitions. [2020-10-27 04:55:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:55:34,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-27 04:55:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:34,549 INFO L225 Difference]: With dead ends: 39676 [2020-10-27 04:55:34,549 INFO L226 Difference]: Without dead ends: 35415 [2020-10-27 04:55:34,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:55:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35415 states. [2020-10-27 04:55:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35415 to 9238. [2020-10-27 04:55:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9238 states. [2020-10-27 04:55:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9238 states to 9238 states and 12903 transitions. [2020-10-27 04:55:36,695 INFO L78 Accepts]: Start accepts. Automaton has 9238 states and 12903 transitions. Word has length 117 [2020-10-27 04:55:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:36,695 INFO L481 AbstractCegarLoop]: Abstraction has 9238 states and 12903 transitions. [2020-10-27 04:55:36,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:55:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 9238 states and 12903 transitions. [2020-10-27 04:55:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 04:55:36,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:36,701 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] [2020-10-27 04:55:36,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:55:36,701 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:36,702 INFO L82 PathProgramCache]: Analyzing trace with hash -790617860, now seen corresponding path program 1 times [2020-10-27 04:55:36,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:36,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709184538] [2020-10-27 04:55:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:55:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:39,499 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:55:39,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:55:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:39,555 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 04:55:39,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709184538] [2020-10-27 04:55:39,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:39,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:39,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970619061] [2020-10-27 04:55:39,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:39,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:39,557 INFO L87 Difference]: Start difference. First operand 9238 states and 12903 transitions. Second operand 5 states. [2020-10-27 04:55:39,907 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:55:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:43,331 INFO L93 Difference]: Finished difference Result 15859 states and 22149 transitions. [2020-10-27 04:55:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:55:43,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 04:55:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:43,341 INFO L225 Difference]: With dead ends: 15859 [2020-10-27 04:55:43,341 INFO L226 Difference]: Without dead ends: 9238 [2020-10-27 04:55:43,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2020-10-27 04:55:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 9235. [2020-10-27 04:55:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9235 states. [2020-10-27 04:55:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 12831 transitions. [2020-10-27 04:55:45,169 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 12831 transitions. Word has length 117 [2020-10-27 04:55:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:45,169 INFO L481 AbstractCegarLoop]: Abstraction has 9235 states and 12831 transitions. [2020-10-27 04:55:45,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 12831 transitions. [2020-10-27 04:55:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 04:55:45,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:45,175 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] [2020-10-27 04:55:45,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:55:45,175 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash 873850160, now seen corresponding path program 1 times [2020-10-27 04:55:45,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:45,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527601372] [2020-10-27 04:55:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:46,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 04:55:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:47,311 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:55:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:47,389 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 04:55:47,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527601372] [2020-10-27 04:55:47,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:47,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:55:47,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085637503] [2020-10-27 04:55:47,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:55:47,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:47,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:55:47,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:55:47,391 INFO L87 Difference]: Start difference. First operand 9235 states and 12831 transitions. Second operand 11 states. [2020-10-27 04:55:47,822 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:55:50,132 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 04:55:50,562 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:54,855 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:55:55,289 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 04:56:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:01,052 INFO L93 Difference]: Finished difference Result 43853 states and 64809 transitions. [2020-10-27 04:56:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:56:01,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2020-10-27 04:56:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:01,114 INFO L225 Difference]: With dead ends: 43853 [2020-10-27 04:56:01,114 INFO L226 Difference]: Without dead ends: 36816 [2020-10-27 04:56:01,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:56:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36816 states. [2020-10-27 04:56:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36816 to 7883. [2020-10-27 04:56:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7883 states. [2020-10-27 04:56:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7883 states to 7883 states and 10541 transitions. [2020-10-27 04:56:03,207 INFO L78 Accepts]: Start accepts. Automaton has 7883 states and 10541 transitions. Word has length 118 [2020-10-27 04:56:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:03,207 INFO L481 AbstractCegarLoop]: Abstraction has 7883 states and 10541 transitions. [2020-10-27 04:56:03,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:56:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7883 states and 10541 transitions. [2020-10-27 04:56:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 04:56:03,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:03,213 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] [2020-10-27 04:56:03,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:56:03,213 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash 289750177, now seen corresponding path program 1 times [2020-10-27 04:56:03,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:03,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055732336] [2020-10-27 04:56:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:56:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:56:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:56:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:03,923 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:56:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:03,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:56:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:56:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:56:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:03,976 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 04:56:03,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055732336] [2020-10-27 04:56:03,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:03,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:03,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459635584] [2020-10-27 04:56:03,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:56:03,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:56:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:56:03,978 INFO L87 Difference]: Start difference. First operand 7883 states and 10541 transitions. Second operand 6 states. [2020-10-27 04:56:04,379 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:56:06,173 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:56:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:09,270 INFO L93 Difference]: Finished difference Result 17064 states and 24135 transitions. [2020-10-27 04:56:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:56:09,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-27 04:56:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:09,281 INFO L225 Difference]: With dead ends: 17064 [2020-10-27 04:56:09,282 INFO L226 Difference]: Without dead ends: 11172 [2020-10-27 04:56:09,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:56:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2020-10-27 04:56:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 11169. [2020-10-27 04:56:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11169 states. [2020-10-27 04:56:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11169 states to 11169 states and 15758 transitions. [2020-10-27 04:56:11,946 INFO L78 Accepts]: Start accepts. Automaton has 11169 states and 15758 transitions. Word has length 118 [2020-10-27 04:56:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:11,946 INFO L481 AbstractCegarLoop]: Abstraction has 11169 states and 15758 transitions. [2020-10-27 04:56:11,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:56:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 11169 states and 15758 transitions. [2020-10-27 04:56:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 04:56:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:11,952 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] [2020-10-27 04:56:11,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:56:11,952 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash -331674635, now seen corresponding path program 1 times [2020-10-27 04:56:11,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:11,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473861895] [2020-10-27 04:56:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:56:12,066 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:56:12,066 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:56:12,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:56:12,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:56:12 BoogieIcfgContainer [2020-10-27 04:56:12,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:56:12,119 INFO L168 Benchmark]: Toolchain (without parser) took 180070.14 ms. Allocated memory was 158.3 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 132.6 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2020-10-27 04:56:12,119 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 158.3 MB. Free memory was 130.3 MB in the beginning and 130.2 MB in the end (delta: 86.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:56:12,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.25 ms. Allocated memory is still 158.3 MB. Free memory was 132.0 MB in the beginning and 110.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-27 04:56:12,122 INFO L168 Benchmark]: Boogie Preprocessor took 153.41 ms. Allocated memory is still 158.3 MB. Free memory was 110.3 MB in the beginning and 107.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:56:12,123 INFO L168 Benchmark]: RCFGBuilder took 1439.35 ms. Allocated memory is still 158.3 MB. Free memory was 106.8 MB in the beginning and 52.5 MB in the end (delta: 54.3 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:56:12,123 INFO L168 Benchmark]: TraceAbstraction took 177846.61 ms. Allocated memory was 158.3 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 52.0 MB in the beginning and 2.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-10-27 04:56:12,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 158.3 MB. Free memory was 130.3 MB in the beginning and 130.2 MB in the end (delta: 86.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 617.25 ms. Allocated memory is still 158.3 MB. Free memory was 132.0 MB in the beginning and 110.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 153.41 ms. Allocated memory is still 158.3 MB. Free memory was 110.3 MB in the beginning and 107.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1439.35 ms. Allocated memory is still 158.3 MB. Free memory was 106.8 MB in the beginning and 52.5 MB in the end (delta: 54.3 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 177846.61 ms. Allocated memory was 158.3 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 52.0 MB in the beginning and 2.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1142; [L71] int __return_1270; [L72] int __return_1389; [L73] int __return_1499; [L76] int main__c1; [L77] int main__i2; [L78] main__c1 = 0 [L79] ep12 = __VERIFIER_nondet_bool() [L80] ep13 = __VERIFIER_nondet_bool() [L81] ep21 = __VERIFIER_nondet_bool() [L82] ep23 = __VERIFIER_nondet_bool() [L83] ep31 = __VERIFIER_nondet_bool() [L84] ep32 = __VERIFIER_nondet_bool() [L85] id1 = __VERIFIER_nondet_char() [L86] r1 = __VERIFIER_nondet_uchar() [L87] st1 = __VERIFIER_nondet_char() [L88] nl1 = __VERIFIER_nondet_char() [L89] m1 = __VERIFIER_nondet_char() [L90] max1 = __VERIFIER_nondet_char() [L91] mode1 = __VERIFIER_nondet_bool() [L92] id2 = __VERIFIER_nondet_char() [L93] r2 = __VERIFIER_nondet_uchar() [L94] st2 = __VERIFIER_nondet_char() [L95] nl2 = __VERIFIER_nondet_char() [L96] m2 = __VERIFIER_nondet_char() [L97] max2 = __VERIFIER_nondet_char() [L98] mode2 = __VERIFIER_nondet_bool() [L99] id3 = __VERIFIER_nondet_char() [L100] r3 = __VERIFIER_nondet_uchar() [L101] st3 = __VERIFIER_nondet_char() [L102] nl3 = __VERIFIER_nondet_char() [L103] m3 = __VERIFIER_nondet_char() [L104] max3 = __VERIFIER_nondet_char() [L105] mode3 = __VERIFIER_nondet_bool() [L107] _Bool init__r121; [L108] _Bool init__r131; [L109] _Bool init__r211; [L110] _Bool init__r231; [L111] _Bool init__r311; [L112] _Bool init__r321; [L113] _Bool init__r122; [L114] int init__tmp; [L115] _Bool init__r132; [L116] int init__tmp___0; [L117] _Bool init__r212; [L118] int init__tmp___1; [L119] _Bool init__r232; [L120] int init__tmp___2; [L121] _Bool init__r312; [L122] int init__tmp___3; [L123] _Bool init__r322; [L124] int init__tmp___4; [L125] int init__tmp___5; [L126] init__r121 = ep12 [L127] init__r131 = ep13 [L128] init__r211 = ep21 [L129] init__r231 = ep23 [L130] init__r311 = ep31 [L131] init__r321 = ep32 [L132] COND FALSE !(!(init__r121 == 0)) [L1640] COND TRUE !(init__r131 == 0) [L1642] COND TRUE !(ep32 == 0) [L1644] init__tmp = 1 [L136] init__r122 = (_Bool)init__tmp [L137] COND TRUE !(init__r131 == 0) [L139] init__tmp___0 = 1 [L141] init__r132 = (_Bool)init__tmp___0 [L142] COND TRUE !(init__r211 == 0) [L144] init__tmp___1 = 1 [L146] init__r212 = (_Bool)init__tmp___1 [L147] COND FALSE !(!(init__r231 == 0)) [L1571] COND TRUE !(init__r211 == 0) [L1573] COND TRUE !(ep13 == 0) [L1575] init__tmp___2 = 1 [L151] init__r232 = (_Bool)init__tmp___2 [L152] COND FALSE !(!(init__r311 == 0)) [L1548] COND TRUE !(init__r321 == 0) [L1550] COND TRUE !(ep21 == 0) [L1552] init__tmp___3 = 1 [L156] init__r312 = (_Bool)init__tmp___3 [L157] COND TRUE !(init__r321 == 0) [L159] init__tmp___4 = 1 [L161] init__r322 = (_Bool)init__tmp___4 [L162] COND TRUE ((int)id1) != ((int)id2) [L164] COND TRUE ((int)id1) != ((int)id3) [L166] COND TRUE ((int)id2) != ((int)id3) [L168] COND TRUE ((int)id1) >= 0 [L170] COND TRUE ((int)id2) >= 0 [L172] COND TRUE ((int)id3) >= 0 [L174] COND TRUE ((int)r1) == 0 [L176] COND TRUE ((int)r2) == 0 [L178] COND TRUE ((int)r3) == 0 [L180] COND TRUE !(init__r122 == 0) [L182] COND TRUE !(init__r132 == 0) [L184] COND TRUE !(init__r212 == 0) [L186] COND TRUE !(init__r232 == 0) [L188] COND TRUE !(init__r312 == 0) [L190] COND TRUE !(init__r322 == 0) [L192] COND TRUE ((int)max1) == ((int)id1) [L194] COND TRUE ((int)max2) == ((int)id2) [L196] COND TRUE ((int)max3) == ((int)id3) [L198] COND TRUE ((int)st1) == 0 [L200] COND TRUE ((int)st2) == 0 [L202] COND TRUE ((int)st3) == 0 [L204] COND TRUE ((int)nl1) == 0 [L206] COND TRUE ((int)nl2) == 0 [L208] COND TRUE ((int)nl3) == 0 [L210] COND TRUE ((int)mode1) == 0 [L212] COND TRUE ((int)mode2) == 0 [L214] COND TRUE ((int)mode3) == 0 [L216] init__tmp___5 = 1 [L217] __return_1142 = init__tmp___5 [L218] main__i2 = __return_1142 [L219] COND TRUE main__i2 != 0 [L221] p12_old = nomsg [L222] p12_new = nomsg [L223] p13_old = nomsg [L224] p13_new = nomsg [L225] p21_old = nomsg [L226] p21_new = nomsg [L227] p23_old = nomsg [L228] p23_new = nomsg [L229] p31_old = nomsg [L230] p31_new = nomsg [L231] p32_old = nomsg [L232] p32_new = nomsg [L233] main__i2 = 0 [L235] COND FALSE !(!(mode1 == 0)) [L241] COND TRUE ((int)r1) < 2 [L243] COND FALSE !(!(ep12 == 0)) [L254] COND TRUE !(ep13 == 0) [L256] int node1____CPAchecker_TMP_1; [L257] COND TRUE max1 != nomsg [L259] COND TRUE p13_new == nomsg [L261] node1____CPAchecker_TMP_1 = max1 [L263] p13_new = node1____CPAchecker_TMP_1 [L265] mode1 = 1 [L267] COND FALSE !(!(mode2 == 0)) [L273] COND TRUE ((int)r2) < 2 [L275] COND TRUE !(ep21 == 0) [L277] int node2____CPAchecker_TMP_0; [L278] COND TRUE max2 != nomsg [L280] COND TRUE p21_new == nomsg [L282] node2____CPAchecker_TMP_0 = max2 [L284] p21_new = node2____CPAchecker_TMP_0 [L286] COND FALSE !(!(ep23 == 0)) [L297] mode2 = 1 [L299] COND FALSE !(!(mode3 == 0)) [L305] COND TRUE ((int)r3) < 2 [L307] COND FALSE !(!(ep31 == 0)) [L318] COND TRUE !(ep32 == 0) [L320] int node3____CPAchecker_TMP_1; [L321] COND TRUE max3 != nomsg [L323] COND TRUE p32_new == nomsg [L325] node3____CPAchecker_TMP_1 = max3 [L327] p32_new = node3____CPAchecker_TMP_1 [L329] mode3 = 1 [L330] p12_old = p12_new [L331] p12_new = nomsg [L332] p13_old = p13_new [L333] p13_new = nomsg [L334] p21_old = p21_new [L335] p21_new = nomsg [L336] p23_old = p23_new [L337] p23_new = nomsg [L338] p31_old = p31_new [L339] p31_new = nomsg [L340] p32_old = p32_new [L341] p32_new = nomsg [L343] int check__tmp; [L344] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L346] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L348] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L350] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] COND FALSE !(((int)r1) >= 2) [L368] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L370] COND TRUE ((int)r1) < 2 [L372] check__tmp = 1 [L373] __return_1270 = check__tmp [L374] main__c1 = __return_1270 [L376] _Bool __tmp_1; [L377] __tmp_1 = main__c1 [L378] _Bool assert__arg; [L379] assert__arg = __tmp_1 [L380] COND FALSE !(assert__arg == 0) [L387] COND TRUE !(mode1 == 0) [L389] COND FALSE !(r1 == 255) [L395] r1 = r1 + 1 [L396] COND TRUE !(ep21 == 0) [L398] m1 = p21_old [L399] p21_old = nomsg [L400] COND FALSE !(((int)m1) > ((int)max1)) [L404] COND FALSE !(!(ep31 == 0)) [L412] COND TRUE ((int)r1) == 1 [L414] COND TRUE ((int)max1) == ((int)id1) [L416] st1 = 1 [L418] mode1 = 0 [L420] COND TRUE !(mode2 == 0) [L422] COND FALSE !(r2 == 255) [L428] r2 = r2 + 1 [L429] COND FALSE !(!(ep12 == 0)) [L437] COND TRUE !(ep32 == 0) [L439] m2 = p32_old [L440] p32_old = nomsg [L441] COND TRUE ((int)m2) > ((int)max2) [L443] max2 = m2 [L445] COND FALSE !(((int)r2) == 2) [L451] mode2 = 0 [L453] COND TRUE !(mode3 == 0) [L455] COND FALSE !(r3 == 255) [L461] r3 = r3 + 1 [L462] COND TRUE !(ep13 == 0) [L464] m3 = p13_old [L465] p13_old = nomsg [L466] COND TRUE ((int)m3) > ((int)max3) [L468] max3 = m3 [L470] COND FALSE !(!(ep23 == 0)) [L478] COND FALSE !(((int)r3) == 2) [L484] mode3 = 0 [L485] p12_old = p12_new [L486] p12_new = nomsg [L487] p13_old = p13_new [L488] p13_new = nomsg [L489] p21_old = p21_new [L490] p21_new = nomsg [L491] p23_old = p23_new [L492] p23_new = nomsg [L493] p31_old = p31_new [L494] p31_new = nomsg [L495] p32_old = p32_new [L496] p32_new = nomsg [L498] int check__tmp; [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L501] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L503] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L505] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L1095] check__tmp = 0 [L531] __return_1389 = check__tmp [L532] main__c1 = __return_1389 [L535] _Bool __tmp_2; [L536] __tmp_2 = main__c1 [L537] _Bool assert__arg; [L538] assert__arg = __tmp_2 [L539] COND TRUE assert__arg == 0 [L541] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 177.7s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 76.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8293 SDtfs, 16013 SDslu, 14628 SDs, 0 SdLazy, 11824 SolverSat, 446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11169occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 63303 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 83.0s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2106 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1970 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...