/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_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:52:00,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:52:00,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:52:01,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:52:01,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:52:01,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:52:01,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:52:01,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:52:01,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:52:01,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:52:01,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:52:01,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:52:01,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:52:01,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:52:01,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:52:01,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:52:01,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:52:01,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:52:01,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:52:01,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:52:01,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:52:01,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:52:01,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:52:01,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:52:01,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:52:01,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:52:01,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:52:01,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:52:01,071 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 [2023-03-31 01:52:01,107 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:52:01,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:52:01,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:52:01,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:52:01,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:52:01,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:52:01,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:52:01,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:52:01,109 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:52:01,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:52:01,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:52:01,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:52:01,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:52:01,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:52:01,112 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:52:01,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:52:01,113 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:52:01,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:52:01,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:52:01,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:52:01,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:52:01,361 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:52:01,362 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:52:01,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-03-31 01:52:02,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:52:02,849 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:52:02,850 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-03-31 01:52:02,866 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4b2f2c5/f17f398c4b014b81bdce242711287aa3/FLAG95914bdd4 [2023-03-31 01:52:02,879 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4b2f2c5/f17f398c4b014b81bdce242711287aa3 [2023-03-31 01:52:02,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:52:02,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:52:02,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:52:02,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:52:02,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:52:02,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:52:02" (1/1) ... [2023-03-31 01:52:02,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edc6ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:02, skipping insertion in model container [2023-03-31 01:52:02,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:52:02" (1/1) ... [2023-03-31 01:52:02,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:52:02,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:52:03,149 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_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-03-31 01:52:03,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:52:03,239 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:52:03,341 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_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2023-03-31 01:52:03,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:52:03,394 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:52:03,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03 WrapperNode [2023-03-31 01:52:03,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:52:03,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:52:03,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:52:03,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:52:03,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:52:03,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:52:03,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:52:03,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:52:03,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (1/1) ... [2023-03-31 01:52:03,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:52:03,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:52:03,492 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) [2023-03-31 01:52:03,523 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 [2023-03-31 01:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:52:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:52:03,687 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:52:03,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:52:04,514 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:52:04,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:52:04,532 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:52:04,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:52:04 BoogieIcfgContainer [2023-03-31 01:52:04,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:52:04,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:52:04,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:52:04,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:52:04,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:52:02" (1/3) ... [2023-03-31 01:52:04,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e504f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:52:04, skipping insertion in model container [2023-03-31 01:52:04,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:52:03" (2/3) ... [2023-03-31 01:52:04,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e504f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:52:04, skipping insertion in model container [2023-03-31 01:52:04,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:52:04" (3/3) ... [2023-03-31 01:52:04,545 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-03-31 01:52:04,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:52:04,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:52:04,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:52:04,615 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;@569bf10a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:52:04,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:52:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 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) [2023-03-31 01:52:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-03-31 01:52:04,631 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:04,632 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] [2023-03-31 01:52:04,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:04,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1612622836, now seen corresponding path program 1 times [2023-03-31 01:52:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:04,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869905108] [2023-03-31 01:52:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869905108] [2023-03-31 01:52:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869905108] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:05,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:52:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727849879] [2023-03-31 01:52:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:05,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:52:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:52:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:05,695 INFO L87 Difference]: Start difference. First operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 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 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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) [2023-03-31 01:52:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:07,358 INFO L93 Difference]: Finished difference Result 1176 states and 1900 transitions. [2023-03-31 01:52:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:52:07,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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 101 [2023-03-31 01:52:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:07,399 INFO L225 Difference]: With dead ends: 1176 [2023-03-31 01:52:07,400 INFO L226 Difference]: Without dead ends: 1027 [2023-03-31 01:52:07,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:52:07,411 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3692 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:07,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3692 Valid, 2931 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:52:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-03-31 01:52:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 400. [2023-03-31 01:52:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 1.5) internal successors, (594), 396 states have internal predecessors, (594), 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) [2023-03-31 01:52:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 597 transitions. [2023-03-31 01:52:07,517 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 597 transitions. Word has length 101 [2023-03-31 01:52:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 597 transitions. [2023-03-31 01:52:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 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) [2023-03-31 01:52:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 597 transitions. [2023-03-31 01:52:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-03-31 01:52:07,521 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:07,521 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] [2023-03-31 01:52:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:52:07,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:07,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1207458237, now seen corresponding path program 1 times [2023-03-31 01:52:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:07,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836722548] [2023-03-31 01:52:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836722548] [2023-03-31 01:52:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836722548] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:08,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:08,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:52:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107144942] [2023-03-31 01:52:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:08,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:52:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:08,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:52:08,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:08,119 INFO L87 Difference]: Start difference. First operand 400 states and 597 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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) [2023-03-31 01:52:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:09,775 INFO L93 Difference]: Finished difference Result 1977 states and 3061 transitions. [2023-03-31 01:52:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:52:09,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 102 [2023-03-31 01:52:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:09,783 INFO L225 Difference]: With dead ends: 1977 [2023-03-31 01:52:09,790 INFO L226 Difference]: Without dead ends: 1681 [2023-03-31 01:52:09,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:09,799 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2431 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:09,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 1701 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:52:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-03-31 01:52:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2023-03-31 01:52:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1667 states have (on average 1.5458908218356329) internal successors, (2577), 1667 states have internal predecessors, (2577), 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) [2023-03-31 01:52:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2580 transitions. [2023-03-31 01:52:10,016 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2580 transitions. Word has length 102 [2023-03-31 01:52:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:10,017 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2580 transitions. [2023-03-31 01:52:10,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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) [2023-03-31 01:52:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2580 transitions. [2023-03-31 01:52:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:10,020 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:10,021 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] [2023-03-31 01:52:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:52:10,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:10,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -761221972, now seen corresponding path program 1 times [2023-03-31 01:52:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242533426] [2023-03-31 01:52:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:10,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242533426] [2023-03-31 01:52:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242533426] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:10,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:10,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296777450] [2023-03-31 01:52:10,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:10,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:10,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:10,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:10,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:10,366 INFO L87 Difference]: Start difference. First operand 1671 states and 2580 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:11,695 INFO L93 Difference]: Finished difference Result 4578 states and 7148 transitions. [2023-03-31 01:52:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:11,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:11,708 INFO L225 Difference]: With dead ends: 4578 [2023-03-31 01:52:11,708 INFO L226 Difference]: Without dead ends: 2979 [2023-03-31 01:52:11,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:11,717 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1458 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:11,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 359 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:52:11,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-03-31 01:52:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2023-03-31 01:52:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2973 states have (on average 1.555331315169862) internal successors, (4624), 2973 states have internal predecessors, (4624), 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) [2023-03-31 01:52:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4627 transitions. [2023-03-31 01:52:12,099 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4627 transitions. Word has length 103 [2023-03-31 01:52:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:12,101 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4627 transitions. [2023-03-31 01:52:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4627 transitions. [2023-03-31 01:52:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:12,109 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:12,109 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] [2023-03-31 01:52:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:52:12,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:12,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash 542251240, now seen corresponding path program 1 times [2023-03-31 01:52:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:12,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903873612] [2023-03-31 01:52:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903873612] [2023-03-31 01:52:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903873612] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:12,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90735702] [2023-03-31 01:52:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:12,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:12,513 INFO L87 Difference]: Start difference. First operand 2977 states and 4627 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:14,038 INFO L93 Difference]: Finished difference Result 8033 states and 12585 transitions. [2023-03-31 01:52:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:14,063 INFO L225 Difference]: With dead ends: 8033 [2023-03-31 01:52:14,063 INFO L226 Difference]: Without dead ends: 5259 [2023-03-31 01:52:14,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:14,073 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1344 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:14,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 376 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:52:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2023-03-31 01:52:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5257. [2023-03-31 01:52:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5253 states have (on average 1.559109080525414) internal successors, (8190), 5253 states have internal predecessors, (8190), 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) [2023-03-31 01:52:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8193 transitions. [2023-03-31 01:52:14,758 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8193 transitions. Word has length 103 [2023-03-31 01:52:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:14,759 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 8193 transitions. [2023-03-31 01:52:14,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8193 transitions. [2023-03-31 01:52:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:14,763 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:14,763 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] [2023-03-31 01:52:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:52:14,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:14,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2049388505, now seen corresponding path program 1 times [2023-03-31 01:52:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17451115] [2023-03-31 01:52:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17451115] [2023-03-31 01:52:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17451115] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50781180] [2023-03-31 01:52:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:15,111 INFO L87 Difference]: Start difference. First operand 5257 states and 8193 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:17,117 INFO L93 Difference]: Finished difference Result 14932 states and 23364 transitions. [2023-03-31 01:52:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:17,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:17,160 INFO L225 Difference]: With dead ends: 14932 [2023-03-31 01:52:17,160 INFO L226 Difference]: Without dead ends: 9837 [2023-03-31 01:52:17,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:17,172 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1350 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:17,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 365 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:52:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2023-03-31 01:52:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 9835. [2023-03-31 01:52:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9835 states, 9831 states have (on average 1.5577255619977621) internal successors, (15314), 9831 states have internal predecessors, (15314), 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) [2023-03-31 01:52:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9835 states to 9835 states and 15317 transitions. [2023-03-31 01:52:18,403 INFO L78 Accepts]: Start accepts. Automaton has 9835 states and 15317 transitions. Word has length 103 [2023-03-31 01:52:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:18,403 INFO L495 AbstractCegarLoop]: Abstraction has 9835 states and 15317 transitions. [2023-03-31 01:52:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9835 states and 15317 transitions. [2023-03-31 01:52:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:18,407 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:18,407 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] [2023-03-31 01:52:18,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:52:18,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:18,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1993639222, now seen corresponding path program 1 times [2023-03-31 01:52:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277292270] [2023-03-31 01:52:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277292270] [2023-03-31 01:52:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277292270] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:18,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:18,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970495882] [2023-03-31 01:52:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:18,786 INFO L87 Difference]: Start difference. First operand 9835 states and 15317 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:21,701 INFO L93 Difference]: Finished difference Result 28787 states and 44931 transitions. [2023-03-31 01:52:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:21,769 INFO L225 Difference]: With dead ends: 28787 [2023-03-31 01:52:21,769 INFO L226 Difference]: Without dead ends: 19077 [2023-03-31 01:52:21,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:21,801 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1372 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:21,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 365 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:52:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19077 states. [2023-03-31 01:52:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19077 to 19075. [2023-03-31 01:52:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19075 states, 19071 states have (on average 1.5538251795920508) internal successors, (29633), 19071 states have internal predecessors, (29633), 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) [2023-03-31 01:52:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19075 states to 19075 states and 29636 transitions. [2023-03-31 01:52:23,894 INFO L78 Accepts]: Start accepts. Automaton has 19075 states and 29636 transitions. Word has length 103 [2023-03-31 01:52:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:23,895 INFO L495 AbstractCegarLoop]: Abstraction has 19075 states and 29636 transitions. [2023-03-31 01:52:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19075 states and 29636 transitions. [2023-03-31 01:52:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:23,901 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:23,901 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] [2023-03-31 01:52:23,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:52:23,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:23,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2022095291, now seen corresponding path program 1 times [2023-03-31 01:52:23,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:23,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700004426] [2023-03-31 01:52:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:24,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700004426] [2023-03-31 01:52:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700004426] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:24,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:24,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844342977] [2023-03-31 01:52:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:24,250 INFO L87 Difference]: Start difference. First operand 19075 states and 29636 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:28,929 INFO L93 Difference]: Finished difference Result 56609 states and 88060 transitions. [2023-03-31 01:52:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:28,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:29,036 INFO L225 Difference]: With dead ends: 56609 [2023-03-31 01:52:29,037 INFO L226 Difference]: Without dead ends: 37629 [2023-03-31 01:52:29,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:29,089 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1398 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 363 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:52:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2023-03-31 01:52:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 37627. [2023-03-31 01:52:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37627 states, 37623 states have (on average 1.5480158413736278) internal successors, (58241), 37623 states have internal predecessors, (58241), 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) [2023-03-31 01:52:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37627 states to 37627 states and 58244 transitions. [2023-03-31 01:52:33,210 INFO L78 Accepts]: Start accepts. Automaton has 37627 states and 58244 transitions. Word has length 103 [2023-03-31 01:52:33,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:33,210 INFO L495 AbstractCegarLoop]: Abstraction has 37627 states and 58244 transitions. [2023-03-31 01:52:33,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 37627 states and 58244 transitions. [2023-03-31 01:52:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 01:52:33,221 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:33,221 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] [2023-03-31 01:52:33,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:52:33,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:33,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1361122205, now seen corresponding path program 1 times [2023-03-31 01:52:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953144216] [2023-03-31 01:52:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953144216] [2023-03-31 01:52:33,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953144216] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:33,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:33,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:52:33,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144083082] [2023-03-31 01:52:33,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:33,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:33,544 INFO L87 Difference]: Start difference. First operand 37627 states and 58244 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:41,730 INFO L93 Difference]: Finished difference Result 107199 states and 166080 transitions. [2023-03-31 01:52:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:52:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) Word has length 103 [2023-03-31 01:52:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:42,169 INFO L225 Difference]: With dead ends: 107199 [2023-03-31 01:52:42,169 INFO L226 Difference]: Without dead ends: 69628 [2023-03-31 01:52:42,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:42,244 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1460 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:42,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 357 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:52:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69628 states. [2023-03-31 01:52:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69628 to 69626. [2023-03-31 01:52:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69626 states, 69622 states have (on average 1.5395420987618855) internal successors, (107186), 69622 states have internal predecessors, (107186), 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) [2023-03-31 01:52:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69626 states to 69626 states and 107189 transitions. [2023-03-31 01:52:49,869 INFO L78 Accepts]: Start accepts. Automaton has 69626 states and 107189 transitions. Word has length 103 [2023-03-31 01:52:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:49,869 INFO L495 AbstractCegarLoop]: Abstraction has 69626 states and 107189 transitions. [2023-03-31 01:52:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-03-31 01:52:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 69626 states and 107189 transitions. [2023-03-31 01:52:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:52:49,882 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:49,882 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] [2023-03-31 01:52:49,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:52:49,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:49,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash 928831378, now seen corresponding path program 1 times [2023-03-31 01:52:49,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:49,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981661592] [2023-03-31 01:52:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:52:50,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:50,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981661592] [2023-03-31 01:52:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981661592] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:50,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:50,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:52:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360516332] [2023-03-31 01:52:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:52:50,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:52:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:52:50,359 INFO L87 Difference]: Start difference. First operand 69626 states and 107189 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 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)