/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.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:58:26,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:58:26,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:58:26,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:58:26,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:58:26,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:58:26,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:58:26,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:58:26,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:58:26,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:58:26,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:58:26,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:58:26,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:58:26,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:58:26,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:58:26,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:58:26,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:58:26,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:58:26,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:58:26,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:58:26,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:58:26,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:58:26,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:58:26,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:58:26,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:58:26,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:58:26,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:58:26,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:58:26,233 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 06:58:26,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:58:26,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:58:26,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:58:26,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:58:26,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:58:26,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:58:26,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:58:26,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:58:26,264 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:58:26,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:58:26,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:58:26,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:58:26,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:58:26,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:58:26,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:58:26,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:58:26,268 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:58:26,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:58:26,268 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:58:26,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:58:26,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:58:26,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:58:26,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:58:26,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:58:26,531 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:58:26,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-04-02 06:58:27,716 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:58:28,036 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:58:28,036 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-04-02 06:58:28,056 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcdbadea/43ded81e020b4d02adc1d4cab0eaacd5/FLAG5a9a6a1b2 [2023-04-02 06:58:28,069 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcdbadea/43ded81e020b4d02adc1d4cab0eaacd5 [2023-04-02 06:58:28,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:58:28,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:58:28,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:58:28,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:58:28,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:58:28,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:58:28" (1/1) ... [2023-04-02 06:58:28,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f612f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:28, skipping insertion in model container [2023-04-02 06:58:28,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:58:28" (1/1) ... [2023-04-02 06:58:28,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:58:28,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:58:28,625 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.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2023-04-02 06:58:28,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:58:28,833 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:58:29,074 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.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2023-04-02 06:58:29,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:58:29,202 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:58:29,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29 WrapperNode [2023-04-02 06:58:29,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:58:29,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:58:29,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:58:29,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:58:29,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:58:29,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:58:29,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:58:29,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:58:29,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (1/1) ... [2023-04-02 06:58:29,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:58:29,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:58:29,427 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 06:58:29,451 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 06:58:29,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:58:29,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:58:29,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:58:29,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:58:29,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:58:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:58:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:58:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:58:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:58:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:58:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:58:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:58:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:58:29,676 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:58:29,678 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:58:31,294 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:58:31,305 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:58:31,306 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:58:31,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:58:31 BoogieIcfgContainer [2023-04-02 06:58:31,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:58:31,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:58:31,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:58:31,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:58:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:58:28" (1/3) ... [2023-04-02 06:58:31,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665c9784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:58:31, skipping insertion in model container [2023-04-02 06:58:31,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:58:29" (2/3) ... [2023-04-02 06:58:31,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665c9784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:58:31, skipping insertion in model container [2023-04-02 06:58:31,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:58:31" (3/3) ... [2023-04-02 06:58:31,315 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-04-02 06:58:31,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:58:31,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:58:31,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:58:31,392 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;@1f083ae9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:58:31,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:58:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 785 states, 770 states have (on average 1.7857142857142858) internal successors, (1375), 780 states have internal predecessors, (1375), 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 06:58:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-02 06:58:31,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:31,430 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] [2023-04-02 06:58:31,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:31,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1248124514, now seen corresponding path program 1 times [2023-04-02 06:58:31,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:31,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377460815] [2023-04-02 06:58:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:31,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:32,876 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 06:58:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377460815] [2023-04-02 06:58:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377460815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459669355] [2023-04-02 06:58:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:32,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:32,935 INFO L87 Difference]: Start difference. First operand has 785 states, 770 states have (on average 1.7857142857142858) internal successors, (1375), 780 states have internal predecessors, (1375), 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 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:36,699 INFO L93 Difference]: Finished difference Result 1479 states and 2559 transitions. [2023-04-02 06:58:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-04-02 06:58:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:36,720 INFO L225 Difference]: With dead ends: 1479 [2023-04-02 06:58:36,720 INFO L226 Difference]: Without dead ends: 1242 [2023-04-02 06:58:36,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:36,728 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 835 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:36,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2435 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:58:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2023-04-02 06:58:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1240. [2023-04-02 06:58:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1236 states have (on average 1.5485436893203883) internal successors, (1914), 1236 states have internal predecessors, (1914), 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 06:58:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1917 transitions. [2023-04-02 06:58:36,865 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1917 transitions. Word has length 320 [2023-04-02 06:58:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:36,870 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1917 transitions. [2023-04-02 06:58:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1917 transitions. [2023-04-02 06:58:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-02 06:58:36,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:36,883 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] [2023-04-02 06:58:36,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:58:36,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:36,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1048903652, now seen corresponding path program 1 times [2023-04-02 06:58:36,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329239236] [2023-04-02 06:58:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:36,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:37,742 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 06:58:37,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:37,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329239236] [2023-04-02 06:58:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329239236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:37,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:37,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217643746] [2023-04-02 06:58:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:37,746 INFO L87 Difference]: Start difference. First operand 1240 states and 1917 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:40,547 INFO L93 Difference]: Finished difference Result 2524 states and 3916 transitions. [2023-04-02 06:58:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-04-02 06:58:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:40,558 INFO L225 Difference]: With dead ends: 2524 [2023-04-02 06:58:40,559 INFO L226 Difference]: Without dead ends: 2164 [2023-04-02 06:58:40,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:40,574 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 670 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:40,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2077 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 06:58:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2023-04-02 06:58:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2162. [2023-04-02 06:58:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2158 states have (on average 1.5421686746987953) internal successors, (3328), 2158 states have internal predecessors, (3328), 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 06:58:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3331 transitions. [2023-04-02 06:58:40,665 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3331 transitions. Word has length 320 [2023-04-02 06:58:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3331 transitions. [2023-04-02 06:58:40,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3331 transitions. [2023-04-02 06:58:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-02 06:58:40,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:40,674 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] [2023-04-02 06:58:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:58:40,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:40,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash 234543515, now seen corresponding path program 1 times [2023-04-02 06:58:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734466560] [2023-04-02 06:58:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:41,389 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 06:58:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734466560] [2023-04-02 06:58:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734466560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:41,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:41,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818988311] [2023-04-02 06:58:41,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:41,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:41,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:41,394 INFO L87 Difference]: Start difference. First operand 2162 states and 3331 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:44,690 INFO L93 Difference]: Finished difference Result 4646 states and 7189 transitions. [2023-04-02 06:58:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:44,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-04-02 06:58:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:44,707 INFO L225 Difference]: With dead ends: 4646 [2023-04-02 06:58:44,707 INFO L226 Difference]: Without dead ends: 3972 [2023-04-02 06:58:44,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:44,717 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 662 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:44,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2063 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 06:58:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2023-04-02 06:58:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3970. [2023-04-02 06:58:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3966 states have (on average 1.5360564800806857) internal successors, (6092), 3966 states have internal predecessors, (6092), 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 06:58:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 6095 transitions. [2023-04-02 06:58:44,870 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 6095 transitions. Word has length 320 [2023-04-02 06:58:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:44,871 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 6095 transitions. [2023-04-02 06:58:44,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 6095 transitions. [2023-04-02 06:58:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-02 06:58:44,881 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:44,881 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] [2023-04-02 06:58:44,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:58:44,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:44,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2046512957, now seen corresponding path program 1 times [2023-04-02 06:58:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432021420] [2023-04-02 06:58:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:45,515 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 06:58:45,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432021420] [2023-04-02 06:58:45,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432021420] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:45,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:45,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:45,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719317867] [2023-04-02 06:58:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:45,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:45,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:45,518 INFO L87 Difference]: Start difference. First operand 3970 states and 6095 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:48,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:48,816 INFO L93 Difference]: Finished difference Result 8774 states and 13533 transitions. [2023-04-02 06:58:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:48,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-04-02 06:58:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:48,848 INFO L225 Difference]: With dead ends: 8774 [2023-04-02 06:58:48,848 INFO L226 Difference]: Without dead ends: 7516 [2023-04-02 06:58:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:48,862 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 654 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:48,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 2049 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 06:58:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2023-04-02 06:58:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2023-04-02 06:58:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7510 states have (on average 1.5302263648468708) internal successors, (11492), 7510 states have internal predecessors, (11492), 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 06:58:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 11495 transitions. [2023-04-02 06:58:49,250 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 11495 transitions. Word has length 320 [2023-04-02 06:58:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:49,251 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 11495 transitions. [2023-04-02 06:58:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 06:58:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 11495 transitions. [2023-04-02 06:58:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-04-02 06:58:49,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:49,267 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] [2023-04-02 06:58:49,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:58:49,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:49,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 928876380, now seen corresponding path program 1 times [2023-04-02 06:58:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659376058] [2023-04-02 06:58:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:50,512 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 06:58:50,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:50,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659376058] [2023-04-02 06:58:50,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659376058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:50,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:50,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:58:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201017385] [2023-04-02 06:58:50,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:50,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:58:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:58:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:50,516 INFO L87 Difference]: Start difference. First operand 7514 states and 11495 transitions. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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 06:58:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:55,159 INFO L93 Difference]: Finished difference Result 22295 states and 34070 transitions. [2023-04-02 06:58:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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 320 [2023-04-02 06:58:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:55,217 INFO L225 Difference]: With dead ends: 22295 [2023-04-02 06:58:55,218 INFO L226 Difference]: Without dead ends: 14796 [2023-04-02 06:58:55,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:58:55,239 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 2696 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:55,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2977 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-02 06:58:55,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14796 states. [2023-04-02 06:58:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14796 to 14794. [2023-04-02 06:58:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14794 states, 14790 states have (on average 1.5216362407031778) internal successors, (22505), 14790 states have internal predecessors, (22505), 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 06:58:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14794 states to 14794 states and 22508 transitions. [2023-04-02 06:58:56,221 INFO L78 Accepts]: Start accepts. Automaton has 14794 states and 22508 transitions. Word has length 320 [2023-04-02 06:58:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:56,222 INFO L495 AbstractCegarLoop]: Abstraction has 14794 states and 22508 transitions. [2023-04-02 06:58:56,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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 06:58:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14794 states and 22508 transitions. [2023-04-02 06:58:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-04-02 06:58:56,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:56,250 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] [2023-04-02 06:58:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:58:56,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:56,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash -436962112, now seen corresponding path program 1 times [2023-04-02 06:58:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560161589] [2023-04-02 06:58:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:56,799 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 06:58:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560161589] [2023-04-02 06:58:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560161589] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:56,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:56,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723792879] [2023-04-02 06:58:56,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:56,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:56,802 INFO L87 Difference]: Start difference. First operand 14794 states and 22508 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 06:59:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:02,097 INFO L93 Difference]: Finished difference Result 44337 states and 67453 transitions. [2023-04-02 06:59:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:59:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-04-02 06:59:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:02,181 INFO L225 Difference]: With dead ends: 44337 [2023-04-02 06:59:02,181 INFO L226 Difference]: Without dead ends: 29568 [2023-04-02 06:59:02,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:02,229 INFO L413 NwaCegarLoop]: 2356 mSDtfsCounter, 1174 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:02,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 3536 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-02 06:59:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29568 states. [2023-04-02 06:59:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29568 to 14807. [2023-04-02 06:59:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14803 states have (on average 1.5215834628115923) internal successors, (22524), 14803 states have internal predecessors, (22524), 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 06:59:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 22527 transitions. [2023-04-02 06:59:03,461 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 22527 transitions. Word has length 322 [2023-04-02 06:59:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:03,461 INFO L495 AbstractCegarLoop]: Abstraction has 14807 states and 22527 transitions. [2023-04-02 06:59:03,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 06:59:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 22527 transitions. [2023-04-02 06:59:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-04-02 06:59:03,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:03,487 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] [2023-04-02 06:59:03,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:59:03,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:03,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 63547067, now seen corresponding path program 1 times [2023-04-02 06:59:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:03,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986177340] [2023-04-02 06:59:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:04,142 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 06:59:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986177340] [2023-04-02 06:59:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986177340] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:04,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:04,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998138387] [2023-04-02 06:59:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:04,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:04,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:04,145 INFO L87 Difference]: Start difference. First operand 14807 states and 22527 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 06:59:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:09,530 INFO L93 Difference]: Finished difference Result 43662 states and 66308 transitions. [2023-04-02 06:59:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:59:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-04-02 06:59:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:09,609 INFO L225 Difference]: With dead ends: 43662 [2023-04-02 06:59:09,609 INFO L226 Difference]: Without dead ends: 28997 [2023-04-02 06:59:09,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:09,642 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 1046 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:09,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 3431 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:59:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28997 states. [2023-04-02 06:59:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28997 to 28995. [2023-04-02 06:59:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28995 states, 28991 states have (on average 1.5114345831464937) internal successors, (43818), 28991 states have internal predecessors, (43818), 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 06:59:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28995 states to 28995 states and 43821 transitions. [2023-04-02 06:59:11,453 INFO L78 Accepts]: Start accepts. Automaton has 28995 states and 43821 transitions. Word has length 322 [2023-04-02 06:59:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:11,454 INFO L495 AbstractCegarLoop]: Abstraction has 28995 states and 43821 transitions. [2023-04-02 06:59:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 06:59:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 28995 states and 43821 transitions. [2023-04-02 06:59:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-04-02 06:59:11,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:11,503 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] [2023-04-02 06:59:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:59:11,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:11,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 331448602, now seen corresponding path program 1 times [2023-04-02 06:59:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:11,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875926651] [2023-04-02 06:59:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:11,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:12,104 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 06:59:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875926651] [2023-04-02 06:59:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875926651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:12,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256478769] [2023-04-02 06:59:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:12,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:12,122 INFO L87 Difference]: Start difference. First operand 28995 states and 43821 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 06:59:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:19,266 INFO L93 Difference]: Finished difference Result 86872 states and 131276 transitions. [2023-04-02 06:59:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:59:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 323 [2023-04-02 06:59:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:19,467 INFO L225 Difference]: With dead ends: 86872 [2023-04-02 06:59:19,468 INFO L226 Difference]: Without dead ends: 57937 [2023-04-02 06:59:19,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:19,542 INFO L413 NwaCegarLoop]: 2355 mSDtfsCounter, 1169 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:19,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3535 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 06:59:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57937 states. [2023-04-02 06:59:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57937 to 29013. [2023-04-02 06:59:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29013 states, 29009 states have (on average 1.5112206556585888) internal successors, (43839), 29009 states have internal predecessors, (43839), 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 06:59:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29013 states to 29013 states and 43842 transitions. [2023-04-02 06:59:21,937 INFO L78 Accepts]: Start accepts. Automaton has 29013 states and 43842 transitions. Word has length 323 [2023-04-02 06:59:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:21,938 INFO L495 AbstractCegarLoop]: Abstraction has 29013 states and 43842 transitions. [2023-04-02 06:59:21,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 06:59:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29013 states and 43842 transitions. [2023-04-02 06:59:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-02 06:59:21,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:21,979 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] [2023-04-02 06:59:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:59:21,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:21,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash -717742218, now seen corresponding path program 1 times [2023-04-02 06:59:21,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:21,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204707] [2023-04-02 06:59:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:21,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:22,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:22,526 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 06:59:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:22,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204707] [2023-04-02 06:59:22,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204707] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:22,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:22,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:22,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508706709] [2023-04-02 06:59:22,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:22,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:22,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:22,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:22,528 INFO L87 Difference]: Start difference. First operand 29013 states and 43842 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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 06:59:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:30,077 INFO L93 Difference]: Finished difference Result 82292 states and 124097 transitions. [2023-04-02 06:59:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:59:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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 324 [2023-04-02 06:59:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:30,201 INFO L225 Difference]: With dead ends: 82292 [2023-04-02 06:59:30,201 INFO L226 Difference]: Without dead ends: 53524 [2023-04-02 06:59:30,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:30,253 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 1040 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:30,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 3437 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 06:59:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53524 states. [2023-04-02 06:59:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53524 to 53522. [2023-04-02 06:59:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53522 states, 53518 states have (on average 1.4996262939571734) internal successors, (80257), 53518 states have internal predecessors, (80257), 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 06:59:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53522 states to 53522 states and 80260 transitions. [2023-04-02 06:59:34,476 INFO L78 Accepts]: Start accepts. Automaton has 53522 states and 80260 transitions. Word has length 324 [2023-04-02 06:59:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:34,476 INFO L495 AbstractCegarLoop]: Abstraction has 53522 states and 80260 transitions. [2023-04-02 06:59:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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 06:59:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53522 states and 80260 transitions. [2023-04-02 06:59:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-02 06:59:34,540 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:34,541 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] [2023-04-02 06:59:34,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:59:34,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:34,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -15088429, now seen corresponding path program 1 times [2023-04-02 06:59:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453340684] [2023-04-02 06:59:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:35,725 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 06:59:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:35,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453340684] [2023-04-02 06:59:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453340684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:35,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:59:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228852974] [2023-04-02 06:59:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:35,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:59:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:35,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:59:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:59:35,728 INFO L87 Difference]: Start difference. First operand 53522 states and 80260 transitions. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 5 states have internal predecessors, (321), 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 06:59:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:46,490 INFO L93 Difference]: Finished difference Result 158546 states and 237353 transitions. [2023-04-02 06:59:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:59:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 5 states have internal predecessors, (321), 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 324 [2023-04-02 06:59:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:46,670 INFO L225 Difference]: With dead ends: 158546 [2023-04-02 06:59:46,671 INFO L226 Difference]: Without dead ends: 105083 [2023-04-02 06:59:46,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:59:46,727 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 3898 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3898 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:46,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3898 Valid, 2918 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 06:59:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105083 states. [2023-04-02 06:59:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105083 to 105081. [2023-04-02 06:59:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105081 states, 105077 states have (on average 1.4894220428828382) internal successors, (156504), 105077 states have internal predecessors, (156504), 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 06:59:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105081 states to 105081 states and 156507 transitions. [2023-04-02 06:59:55,325 INFO L78 Accepts]: Start accepts. Automaton has 105081 states and 156507 transitions. Word has length 324 [2023-04-02 06:59:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:55,326 INFO L495 AbstractCegarLoop]: Abstraction has 105081 states and 156507 transitions. [2023-04-02 06:59:55,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 5 states have internal predecessors, (321), 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 06:59:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 105081 states and 156507 transitions. [2023-04-02 06:59:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-04-02 06:59:55,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:55,462 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] [2023-04-02 06:59:55,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:59:55,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:55,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -568734080, now seen corresponding path program 1 times [2023-04-02 06:59:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:55,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123841201] [2023-04-02 06:59:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:56,203 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 06:59:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123841201] [2023-04-02 06:59:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123841201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:56,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428551887] [2023-04-02 06:59:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:56,206 INFO L87 Difference]: Start difference. First operand 105081 states and 156507 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 07:00:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:16,140 INFO L93 Difference]: Finished difference Result 310047 states and 460816 transitions. [2023-04-02 07:00:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 07:00:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 326 [2023-04-02 07:00:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:16,746 INFO L225 Difference]: With dead ends: 310047 [2023-04-02 07:00:16,747 INFO L226 Difference]: Without dead ends: 205487 [2023-04-02 07:00:16,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:16,859 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 1027 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:16,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 3424 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-02 07:00:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205487 states. [2023-04-02 07:00:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205487 to 205485. [2023-04-02 07:00:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205485 states, 205481 states have (on average 1.4774261367231034) internal successors, (303583), 205481 states have internal predecessors, (303583), 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 07:00:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205485 states to 205485 states and 303586 transitions. [2023-04-02 07:00:34,340 INFO L78 Accepts]: Start accepts. Automaton has 205485 states and 303586 transitions. Word has length 326 [2023-04-02 07:00:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:34,340 INFO L495 AbstractCegarLoop]: Abstraction has 205485 states and 303586 transitions. [2023-04-02 07:00:34,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 3 states have internal predecessors, (323), 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 07:00:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 205485 states and 303586 transitions. [2023-04-02 07:00:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-04-02 07:00:35,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:35,012 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] [2023-04-02 07:00:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 07:00:35,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:35,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash 669984541, now seen corresponding path program 1 times [2023-04-02 07:00:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:35,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90707210] [2023-04-02 07:00:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:36,119 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 07:00:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90707210] [2023-04-02 07:00:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90707210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:36,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:36,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 07:00:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050007541] [2023-04-02 07:00:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:36,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 07:00:36,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:36,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 07:00:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:00:36,122 INFO L87 Difference]: Start difference. First operand 205485 states and 303586 transitions. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 5 states have internal predecessors, (323), 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)