/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 07:00:40,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 07:00:40,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 07:00:40,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 07:00:40,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 07:00:40,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 07:00:40,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 07:00:40,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 07:00:40,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 07:00:40,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 07:00:40,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 07:00:40,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 07:00:40,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 07:00:40,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 07:00:40,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 07:00:40,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 07:00:40,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 07:00:40,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 07:00:40,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 07:00:40,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 07:00:40,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 07:00:40,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 07:00:40,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 07:00:40,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 07:00:40,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 07:00:40,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 07:00:40,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 07:00:40,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 07:00:40,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 07:00:40,871 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 07:00:40,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 07:00:40,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 07:00:40,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 07:00:40,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 07:00:40,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 07:00:40,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 07:00:40,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 07:00:40,874 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 07:00:40,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 07:00:40,875 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 07:00:40,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 07:00:40,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 07:00:40,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 07:00:40,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 07:00:40,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 07:00:40,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:40,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 07:00:40,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 07:00:40,878 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 07:00:41,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 07:00:41,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 07:00:41,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 07:00:41,112 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 07:00:41,112 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 07:00:41,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 07:00:42,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 07:00:42,644 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 07:00:42,644 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 07:00:42,664 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ed8bdd62/d5ce0e4c85ac499db3f5c732eff48a73/FLAG259688192 [2023-04-02 07:00:42,677 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ed8bdd62/d5ce0e4c85ac499db3f5c732eff48a73 [2023-04-02 07:00:42,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 07:00:42,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 07:00:42,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:42,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 07:00:42,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 07:00:42,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:42" (1/1) ... [2023-04-02 07:00:42,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1fd4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:42, skipping insertion in model container [2023-04-02 07:00:42,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:42" (1/1) ... [2023-04-02 07:00:42,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 07:00:42,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 07:00:43,391 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2023-04-02 07:00:43,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:43,710 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 07:00:43,911 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2023-04-02 07:00:44,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:44,130 INFO L208 MainTranslator]: Completed translation [2023-04-02 07:00:44,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44 WrapperNode [2023-04-02 07:00:44,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:44,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 07:00:44,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 07:00:44,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 07:00:44,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 07:00:44,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 07:00:44,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 07:00:44,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 07:00:44,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (1/1) ... [2023-04-02 07:00:44,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:44,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:00:44,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 07:00:44,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 07:00:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 07:00:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 07:00:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 07:00:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 07:00:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 07:00:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 07:00:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 07:00:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 07:00:44,695 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 07:00:44,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 07:00:47,237 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 07:00:47,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 07:00:47,257 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 07:00:47,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:47 BoogieIcfgContainer [2023-04-02 07:00:47,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 07:00:47,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 07:00:47,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 07:00:47,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 07:00:47,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 07:00:42" (1/3) ... [2023-04-02 07:00:47,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36119353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:47, skipping insertion in model container [2023-04-02 07:00:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:44" (2/3) ... [2023-04-02 07:00:47,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36119353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:47, skipping insertion in model container [2023-04-02 07:00:47,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:47" (3/3) ... [2023-04-02 07:00:47,268 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-04-02 07:00:47,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 07:00:47,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 07:00:47,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 07:00:47,379 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2839826b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 07:00:47,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 07:00:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 1537 states, 1523 states have (on average 1.7767564018384767) internal successors, (2706), 1532 states have internal predecessors, (2706), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 07:00:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-02 07:00:47,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:47,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:47,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:47,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1083651170, now seen corresponding path program 1 times [2023-04-02 07:00:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397007111] [2023-04-02 07:00:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:49,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:49,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397007111] [2023-04-02 07:00:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397007111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:49,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:49,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017523163] [2023-04-02 07:00:49,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:49,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:49,298 INFO L87 Difference]: Start difference. First operand has 1537 states, 1523 states have (on average 1.7767564018384767) internal successors, (2706), 1532 states have internal predecessors, (2706), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:58,806 INFO L93 Difference]: Finished difference Result 3155 states and 5457 transitions. [2023-04-02 07:00:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 376 [2023-04-02 07:00:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:58,832 INFO L225 Difference]: With dead ends: 3155 [2023-04-02 07:00:58,833 INFO L226 Difference]: Without dead ends: 2152 [2023-04-02 07:00:58,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:58,848 INFO L413 NwaCegarLoop]: 3181 mSDtfsCounter, 1321 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 5616 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:58,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 5616 Invalid, 3212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-02 07:00:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2023-04-02 07:00:59,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2150. [2023-04-02 07:00:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2146 states have (on average 1.6705498602050326) internal successors, (3585), 2146 states have internal predecessors, (3585), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3588 transitions. [2023-04-02 07:00:59,044 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3588 transitions. Word has length 376 [2023-04-02 07:00:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:59,047 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3588 transitions. [2023-04-02 07:00:59,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3588 transitions. [2023-04-02 07:00:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-02 07:00:59,059 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:59,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:59,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 07:00:59,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:59,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 817771375, now seen corresponding path program 1 times [2023-04-02 07:00:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027083691] [2023-04-02 07:00:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:59,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027083691] [2023-04-02 07:01:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027083691] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:00,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025237944] [2023-04-02 07:01:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:00,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:00,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:00,085 INFO L87 Difference]: Start difference. First operand 2150 states and 3588 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:09,417 INFO L93 Difference]: Finished difference Result 4674 states and 7687 transitions. [2023-04-02 07:01:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:09,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 376 [2023-04-02 07:01:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:09,437 INFO L225 Difference]: With dead ends: 4674 [2023-04-02 07:01:09,437 INFO L226 Difference]: Without dead ends: 3150 [2023-04-02 07:01:09,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:09,443 INFO L413 NwaCegarLoop]: 3438 mSDtfsCounter, 1208 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:09,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 5626 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-02 07:01:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2023-04-02 07:01:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3148. [2023-04-02 07:01:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3144 states have (on average 1.6513994910941476) internal successors, (5192), 3144 states have internal predecessors, (5192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5195 transitions. [2023-04-02 07:01:09,599 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5195 transitions. Word has length 376 [2023-04-02 07:01:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:09,600 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5195 transitions. [2023-04-02 07:01:09,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5195 transitions. [2023-04-02 07:01:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-02 07:01:09,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:09,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:09,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 07:01:09,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:09,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:09,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1148516730, now seen corresponding path program 1 times [2023-04-02 07:01:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244660484] [2023-04-02 07:01:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:09,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:10,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244660484] [2023-04-02 07:01:10,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244660484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:10,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:10,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742456096] [2023-04-02 07:01:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:10,538 INFO L87 Difference]: Start difference. First operand 3148 states and 5195 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:17,082 INFO L93 Difference]: Finished difference Result 7274 states and 11853 transitions. [2023-04-02 07:01:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 376 [2023-04-02 07:01:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:17,104 INFO L225 Difference]: With dead ends: 7274 [2023-04-02 07:01:17,104 INFO L226 Difference]: Without dead ends: 4780 [2023-04-02 07:01:17,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:17,117 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 1183 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 4916 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 07:01:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2023-04-02 07:01:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4778. [2023-04-02 07:01:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4774 states have (on average 1.6315458734813573) internal successors, (7789), 4774 states have internal predecessors, (7789), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 7792 transitions. [2023-04-02 07:01:17,385 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 7792 transitions. Word has length 376 [2023-04-02 07:01:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:17,385 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 7792 transitions. [2023-04-02 07:01:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 3 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 7792 transitions. [2023-04-02 07:01:17,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-04-02 07:01:17,396 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:17,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:17,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 07:01:17,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:17,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -160632828, now seen corresponding path program 1 times [2023-04-02 07:01:17,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:17,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297622037] [2023-04-02 07:01:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297622037] [2023-04-02 07:01:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297622037] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:01:18,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796227059] [2023-04-02 07:01:18,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:01:18,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:01:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:01:18,629 INFO L87 Difference]: Start difference. First operand 4778 states and 7792 transitions. Second operand has 8 states, 8 states have (on average 46.625) internal successors, (373), 7 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:25,695 INFO L93 Difference]: Finished difference Result 18386 states and 30196 transitions. [2023-04-02 07:01:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 07:01:25,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.625) internal successors, (373), 7 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 376 [2023-04-02 07:01:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:25,768 INFO L225 Difference]: With dead ends: 18386 [2023-04-02 07:01:25,769 INFO L226 Difference]: Without dead ends: 17064 [2023-04-02 07:01:25,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 07:01:25,782 INFO L413 NwaCegarLoop]: 2483 mSDtfsCounter, 10378 mSDsluCounter, 11152 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10378 SdHoareTripleChecker+Valid, 13635 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:25,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10378 Valid, 13635 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-02 07:01:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17064 states. [2023-04-02 07:01:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17064 to 6554. [2023-04-02 07:01:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6550 states have (on average 1.634351145038168) internal successors, (10705), 6550 states have internal predecessors, (10705), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 10708 transitions. [2023-04-02 07:01:26,508 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 10708 transitions. Word has length 376 [2023-04-02 07:01:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:26,547 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 10708 transitions. [2023-04-02 07:01:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.625) internal successors, (373), 7 states have internal predecessors, (373), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 10708 transitions. [2023-04-02 07:01:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-04-02 07:01:26,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:26,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:26,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 07:01:26,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:26,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1366687033, now seen corresponding path program 1 times [2023-04-02 07:01:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:26,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099464516] [2023-04-02 07:01:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099464516] [2023-04-02 07:01:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099464516] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:27,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:27,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 07:01:27,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733794805] [2023-04-02 07:01:27,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:27,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 07:01:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 07:01:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:27,585 INFO L87 Difference]: Start difference. First operand 6554 states and 10708 transitions. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:34,217 INFO L93 Difference]: Finished difference Result 14876 states and 24403 transitions. [2023-04-02 07:01:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 07:01:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 377 [2023-04-02 07:01:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:34,249 INFO L225 Difference]: With dead ends: 14876 [2023-04-02 07:01:34,249 INFO L226 Difference]: Without dead ends: 12330 [2023-04-02 07:01:34,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:01:34,259 INFO L413 NwaCegarLoop]: 2494 mSDtfsCounter, 3499 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 5745 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:34,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 5745 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-02 07:01:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12330 states. [2023-04-02 07:01:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12330 to 9598. [2023-04-02 07:01:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 9594 states have (on average 1.6361267458828435) internal successors, (15697), 9594 states have internal predecessors, (15697), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 15700 transitions. [2023-04-02 07:01:35,188 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 15700 transitions. Word has length 377 [2023-04-02 07:01:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 9598 states and 15700 transitions. [2023-04-02 07:01:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 4 states have internal predecessors, (374), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 15700 transitions. [2023-04-02 07:01:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-04-02 07:01:35,204 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:35,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:35,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 07:01:35,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:35,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 923294784, now seen corresponding path program 1 times [2023-04-02 07:01:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597807510] [2023-04-02 07:01:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597807510] [2023-04-02 07:01:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597807510] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:36,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:01:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490808301] [2023-04-02 07:01:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:36,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:01:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:01:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:01:36,525 INFO L87 Difference]: Start difference. First operand 9598 states and 15700 transitions. Second operand has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:46,557 INFO L93 Difference]: Finished difference Result 35340 states and 57981 transitions. [2023-04-02 07:01:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:01:46,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 378 [2023-04-02 07:01:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:46,635 INFO L225 Difference]: With dead ends: 35340 [2023-04-02 07:01:46,636 INFO L226 Difference]: Without dead ends: 30258 [2023-04-02 07:01:46,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:01:46,663 INFO L413 NwaCegarLoop]: 3274 mSDtfsCounter, 7553 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7553 SdHoareTripleChecker+Valid, 11139 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:46,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7553 Valid, 11139 Invalid, 3493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-02 07:01:46,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30258 states. [2023-04-02 07:01:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30258 to 14950. [2023-04-02 07:01:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14950 states, 14946 states have (on average 1.6370266291984477) internal successors, (24467), 14946 states have internal predecessors, (24467), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14950 states to 14950 states and 24470 transitions. [2023-04-02 07:01:48,333 INFO L78 Accepts]: Start accepts. Automaton has 14950 states and 24470 transitions. Word has length 378 [2023-04-02 07:01:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:48,334 INFO L495 AbstractCegarLoop]: Abstraction has 14950 states and 24470 transitions. [2023-04-02 07:01:48,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 14950 states and 24470 transitions. [2023-04-02 07:01:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-04-02 07:01:48,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:48,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 07:01:48,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:48,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash -259118, now seen corresponding path program 1 times [2023-04-02 07:01:48,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:48,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494654185] [2023-04-02 07:01:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494654185] [2023-04-02 07:01:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494654185] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:49,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:49,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:01:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674258939] [2023-04-02 07:01:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:49,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:01:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:01:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:01:49,497 INFO L87 Difference]: Start difference. First operand 14950 states and 24470 transitions. Second operand has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:00,122 INFO L93 Difference]: Finished difference Result 40564 states and 66542 transitions. [2023-04-02 07:02:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:02:00,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 378 [2023-04-02 07:02:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:00,201 INFO L225 Difference]: With dead ends: 40564 [2023-04-02 07:02:00,202 INFO L226 Difference]: Without dead ends: 35482 [2023-04-02 07:02:00,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:02:00,228 INFO L413 NwaCegarLoop]: 3143 mSDtfsCounter, 7484 mSDsluCounter, 9655 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7484 SdHoareTripleChecker+Valid, 12798 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:00,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7484 Valid, 12798 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 07:02:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35482 states. [2023-04-02 07:02:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35482 to 22582. [2023-04-02 07:02:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22582 states, 22578 states have (on average 1.6376561254318363) internal successors, (36975), 22578 states have internal predecessors, (36975), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22582 states to 22582 states and 36978 transitions. [2023-04-02 07:02:03,128 INFO L78 Accepts]: Start accepts. Automaton has 22582 states and 36978 transitions. Word has length 378 [2023-04-02 07:02:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:03,129 INFO L495 AbstractCegarLoop]: Abstraction has 22582 states and 36978 transitions. [2023-04-02 07:02:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 22582 states and 36978 transitions. [2023-04-02 07:02:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-04-02 07:02:03,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:03,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:03,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 07:02:03,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:03,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash 649151361, now seen corresponding path program 1 times [2023-04-02 07:02:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:03,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654312182] [2023-04-02 07:02:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:02:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654312182] [2023-04-02 07:02:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654312182] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:04,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:02:04,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426824026] [2023-04-02 07:02:04,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:02:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:02:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:02:04,223 INFO L87 Difference]: Start difference. First operand 22582 states and 36978 transitions. Second operand has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:15,671 INFO L93 Difference]: Finished difference Result 45650 states and 74884 transitions. [2023-04-02 07:02:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:02:15,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 378 [2023-04-02 07:02:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:15,765 INFO L225 Difference]: With dead ends: 45650 [2023-04-02 07:02:15,766 INFO L226 Difference]: Without dead ends: 40568 [2023-04-02 07:02:15,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:02:15,797 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 7687 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7687 SdHoareTripleChecker+Valid, 13742 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:15,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7687 Valid, 13742 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-04-02 07:02:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40568 states. [2023-04-02 07:02:19,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40568 to 27800. [2023-04-02 07:02:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27800 states, 27796 states have (on average 1.6380054684127212) internal successors, (45530), 27796 states have internal predecessors, (45530), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27800 states to 27800 states and 45533 transitions. [2023-04-02 07:02:19,447 INFO L78 Accepts]: Start accepts. Automaton has 27800 states and 45533 transitions. Word has length 378 [2023-04-02 07:02:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:19,448 INFO L495 AbstractCegarLoop]: Abstraction has 27800 states and 45533 transitions. [2023-04-02 07:02:19,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand 27800 states and 45533 transitions. [2023-04-02 07:02:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-04-02 07:02:19,463 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:19,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 07:02:19,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:19,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1361869783, now seen corresponding path program 1 times [2023-04-02 07:02:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709808763] [2023-04-02 07:02:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:02:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709808763] [2023-04-02 07:02:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709808763] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:20,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:02:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429895126] [2023-04-02 07:02:20,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:20,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:02:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:02:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:02:20,634 INFO L87 Difference]: Start difference. First operand 27800 states and 45533 transitions. Second operand has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:33,200 INFO L93 Difference]: Finished difference Result 48370 states and 79344 transitions. [2023-04-02 07:02:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:02:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 378 [2023-04-02 07:02:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:33,277 INFO L225 Difference]: With dead ends: 48370 [2023-04-02 07:02:33,277 INFO L226 Difference]: Without dead ends: 45824 [2023-04-02 07:02:33,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:02:33,296 INFO L413 NwaCegarLoop]: 3117 mSDtfsCounter, 7882 mSDsluCounter, 10275 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7882 SdHoareTripleChecker+Valid, 13392 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:33,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7882 Valid, 13392 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-02 07:02:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45824 states. [2023-04-02 07:02:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45824 to 30520. [2023-04-02 07:02:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30520 states, 30516 states have (on average 1.6384191899331497) internal successors, (49998), 30516 states have internal predecessors, (49998), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30520 states to 30520 states and 50001 transitions. [2023-04-02 07:02:37,432 INFO L78 Accepts]: Start accepts. Automaton has 30520 states and 50001 transitions. Word has length 378 [2023-04-02 07:02:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:37,433 INFO L495 AbstractCegarLoop]: Abstraction has 30520 states and 50001 transitions. [2023-04-02 07:02:37,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.875) internal successors, (375), 7 states have internal predecessors, (375), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30520 states and 50001 transitions. [2023-04-02 07:02:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-04-02 07:02:37,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:37,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:37,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 07:02:37,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:37,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash 5237246, now seen corresponding path program 1 times [2023-04-02 07:02:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:37,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026279301] [2023-04-02 07:02:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:37,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:02:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:38,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026279301] [2023-04-02 07:02:38,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026279301] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:38,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:38,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:02:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184282087] [2023-04-02 07:02:38,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:38,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:02:38,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:02:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:02:38,390 INFO L87 Difference]: Start difference. First operand 30520 states and 50001 transitions. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:49,953 INFO L93 Difference]: Finished difference Result 64630 states and 105888 transitions. [2023-04-02 07:02:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:02:49,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 379 [2023-04-02 07:02:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:50,036 INFO L225 Difference]: With dead ends: 64630 [2023-04-02 07:02:50,036 INFO L226 Difference]: Without dead ends: 50026 [2023-04-02 07:02:50,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:02:50,063 INFO L413 NwaCegarLoop]: 2419 mSDtfsCounter, 1378 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:50,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 4505 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 07:02:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50026 states. [2023-04-02 07:02:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50026 to 49988. [2023-04-02 07:02:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49988 states, 49984 states have (on average 1.6364236555697824) internal successors, (81795), 49984 states have internal predecessors, (81795), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49988 states to 49988 states and 81798 transitions. [2023-04-02 07:02:56,608 INFO L78 Accepts]: Start accepts. Automaton has 49988 states and 81798 transitions. Word has length 379 [2023-04-02 07:02:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:56,609 INFO L495 AbstractCegarLoop]: Abstraction has 49988 states and 81798 transitions. [2023-04-02 07:02:56,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 49988 states and 81798 transitions. [2023-04-02 07:02:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-04-02 07:02:56,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:56,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:56,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 07:02:56,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:56,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1413746348, now seen corresponding path program 1 times [2023-04-02 07:02:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927449197] [2023-04-02 07:02:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:02:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927449197] [2023-04-02 07:02:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927449197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:57,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:57,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 07:02:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595944410] [2023-04-02 07:02:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 07:02:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 07:02:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:02:57,556 INFO L87 Difference]: Start difference. First operand 49988 states and 81798 transitions. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 4 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:03:12,751 INFO L93 Difference]: Finished difference Result 70374 states and 115337 transitions. [2023-04-02 07:03:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 07:03:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 4 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 379 [2023-04-02 07:03:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:03:12,864 INFO L225 Difference]: With dead ends: 70374 [2023-04-02 07:03:12,865 INFO L226 Difference]: Without dead ends: 60204 [2023-04-02 07:03:12,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:03:12,890 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 1922 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 7553 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:03:12,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 7553 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 07:03:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60204 states. [2023-04-02 07:03:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60204 to 55064. [2023-04-02 07:03:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55064 states, 55060 states have (on average 1.6367598982927716) internal successors, (90120), 55060 states have internal predecessors, (90120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55064 states to 55064 states and 90123 transitions. [2023-04-02 07:03:20,232 INFO L78 Accepts]: Start accepts. Automaton has 55064 states and 90123 transitions. Word has length 379 [2023-04-02 07:03:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:03:20,233 INFO L495 AbstractCegarLoop]: Abstraction has 55064 states and 90123 transitions. [2023-04-02 07:03:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 4 states have internal predecessors, (376), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 55064 states and 90123 transitions. [2023-04-02 07:03:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-04-02 07:03:20,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:03:20,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:03:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 07:03:20,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:03:20,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:03:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1772436663, now seen corresponding path program 1 times [2023-04-02 07:03:20,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:03:20,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553530282] [2023-04-02 07:03:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:03:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:03:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:03:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:03:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:03:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:03:21,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:03:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553530282] [2023-04-02 07:03:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553530282] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:03:21,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:03:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:03:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706154422] [2023-04-02 07:03:21,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:03:21,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:03:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:03:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:03:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:03:21,079 INFO L87 Difference]: Start difference. First operand 55064 states and 90123 transitions. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:03:43,642 INFO L93 Difference]: Finished difference Result 163139 states and 266975 transitions. [2023-04-02 07:03:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:03:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 380 [2023-04-02 07:03:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:03:43,847 INFO L225 Difference]: With dead ends: 163139 [2023-04-02 07:03:43,847 INFO L226 Difference]: Without dead ends: 108184 [2023-04-02 07:03:43,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:03:43,917 INFO L413 NwaCegarLoop]: 3375 mSDtfsCounter, 2268 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 5850 SdHoareTripleChecker+Invalid, 3464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:03:43,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 5850 Invalid, 3464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-02 07:03:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108184 states. [2023-04-02 07:03:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108184 to 108182. [2023-04-02 07:03:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108182 states, 108178 states have (on average 1.631930706798055) internal successors, (176539), 108178 states have internal predecessors, (176539), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108182 states to 108182 states and 176542 transitions. [2023-04-02 07:03:59,773 INFO L78 Accepts]: Start accepts. Automaton has 108182 states and 176542 transitions. Word has length 380 [2023-04-02 07:03:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:03:59,774 INFO L495 AbstractCegarLoop]: Abstraction has 108182 states and 176542 transitions. [2023-04-02 07:03:59,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 108182 states and 176542 transitions. [2023-04-02 07:03:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-04-02 07:03:59,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:03:59,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:03:59,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 07:03:59,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:03:59,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:03:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1996962835, now seen corresponding path program 1 times [2023-04-02 07:03:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:03:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46770901] [2023-04-02 07:03:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:03:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:03:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:04:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:04:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:04:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:04:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:04:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46770901] [2023-04-02 07:04:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46770901] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:04:00,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:04:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:04:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8011566] [2023-04-02 07:04:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:04:00,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:04:00,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:04:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:04:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:04:00,829 INFO L87 Difference]: Start difference. First operand 108182 states and 176542 transitions. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)