/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.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:51:37,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:51:37,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:51:37,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:51:37,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:51:37,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:51:37,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:51:37,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:51:37,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:51:37,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:51:37,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:51:37,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:51:37,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:51:37,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:51:37,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:51:37,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:51:37,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:51:37,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:51:37,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:51:37,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:51:37,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:51:37,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:51:37,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:51:37,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:51:37,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:51:37,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:51:37,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:51:37,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:51:37,397 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 01:51:37,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:51:37,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:51:37,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:51:37,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:51:37,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:51:37,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:51:37,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:51:37,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:51:37,436 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:51:37,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:51:37,436 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:51:37,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:51:37,437 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:51:37,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:51:37,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:51:37,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:51:37,439 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:51:37,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:51:37,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:51:37,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:51:37,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:51:37,666 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:51:37,666 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:51:37,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-03-31 01:51:38,763 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:51:39,018 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:51:39,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-03-31 01:51:39,051 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b999660/a6a7fa1154624182a5582bc9519b6756/FLAG73a8ea5c4 [2023-03-31 01:51:39,063 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b999660/a6a7fa1154624182a5582bc9519b6756 [2023-03-31 01:51:39,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:51:39,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:51:39,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:51:39,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:51:39,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:51:39,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ed9eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39, skipping insertion in model container [2023-03-31 01:51:39,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:51:39,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:51:39,392 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.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2023-03-31 01:51:39,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:51:39,510 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:51:39,603 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.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2023-03-31 01:51:39,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:51:39,677 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:51:39,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39 WrapperNode [2023-03-31 01:51:39,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:51:39,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:51:39,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:51:39,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:51:39,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:51:39,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:51:39,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:51:39,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:51:39,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (1/1) ... [2023-03-31 01:51:39,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:51:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:51:39,830 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 01:51:39,842 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 01:51:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:51:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:51:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:51:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:51:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:51:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:51:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:51:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:51:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:51:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:51:40,070 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:51:40,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:51:41,141 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:51:41,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:51:41,159 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:51:41,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:51:41 BoogieIcfgContainer [2023-03-31 01:51:41,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:51:41,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:51:41,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:51:41,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:51:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:51:39" (1/3) ... [2023-03-31 01:51:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161eff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:51:41, skipping insertion in model container [2023-03-31 01:51:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:51:39" (2/3) ... [2023-03-31 01:51:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161eff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:51:41, skipping insertion in model container [2023-03-31 01:51:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:51:41" (3/3) ... [2023-03-31 01:51:41,174 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-03-31 01:51:41,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:51:41,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:51:41,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:51:41,259 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;@2c76e9d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:51:41,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:51:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 531 states, 486 states have (on average 1.6481481481481481) internal successors, (801), 526 states have internal predecessors, (801), 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 01:51:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-03-31 01:51:41,302 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:41,303 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] [2023-03-31 01:51:41,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:41,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1757914738, now seen corresponding path program 1 times [2023-03-31 01:51:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:41,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005790130] [2023-03-31 01:51:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:42,258 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 01:51:42,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:42,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005790130] [2023-03-31 01:51:42,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005790130] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:42,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:42,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:51:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291388298] [2023-03-31 01:51:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:51:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:51:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:42,303 INFO L87 Difference]: Start difference. First operand has 531 states, 486 states have (on average 1.6481481481481481) internal successors, (801), 526 states have internal predecessors, (801), 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 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 01:51:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:44,000 INFO L93 Difference]: Finished difference Result 980 states and 1526 transitions. [2023-03-31 01:51:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:51:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 123 [2023-03-31 01:51:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:44,020 INFO L225 Difference]: With dead ends: 980 [2023-03-31 01:51:44,020 INFO L226 Difference]: Without dead ends: 488 [2023-03-31 01:51:44,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:51:44,030 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 181 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:44,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 2170 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:51:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-03-31 01:51:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-03-31 01:51:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 484 states have (on average 1.5475206611570247) internal successors, (749), 484 states have internal predecessors, (749), 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 01:51:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 752 transitions. [2023-03-31 01:51:44,102 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 752 transitions. Word has length 123 [2023-03-31 01:51:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:44,103 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 752 transitions. [2023-03-31 01:51:44,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 01:51:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 752 transitions. [2023-03-31 01:51:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-03-31 01:51:44,107 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:44,107 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] [2023-03-31 01:51:44,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:51:44,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:44,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash -87789210, now seen corresponding path program 1 times [2023-03-31 01:51:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318838620] [2023-03-31 01:51:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:44,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:44,472 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 01:51:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318838620] [2023-03-31 01:51:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318838620] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039848289] [2023-03-31 01:51:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:44,476 INFO L87 Difference]: Start difference. First operand 488 states and 752 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 01:51:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:46,022 INFO L93 Difference]: Finished difference Result 1163 states and 1831 transitions. [2023-03-31 01:51:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:51:46,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 163 [2023-03-31 01:51:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:46,028 INFO L225 Difference]: With dead ends: 1163 [2023-03-31 01:51:46,028 INFO L226 Difference]: Without dead ends: 750 [2023-03-31 01:51:46,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:46,030 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 509 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:46,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1341 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:51:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-03-31 01:51:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2023-03-31 01:51:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 744 states have (on average 1.5618279569892473) internal successors, (1162), 744 states have internal predecessors, (1162), 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 01:51:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1165 transitions. [2023-03-31 01:51:46,077 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1165 transitions. Word has length 163 [2023-03-31 01:51:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1165 transitions. [2023-03-31 01:51:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 01:51:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1165 transitions. [2023-03-31 01:51:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-03-31 01:51:46,081 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:46,081 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] [2023-03-31 01:51:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:51:46,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:46,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1580506612, now seen corresponding path program 1 times [2023-03-31 01:51:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:46,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996696425] [2023-03-31 01:51:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:46,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:46,412 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 01:51:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996696425] [2023-03-31 01:51:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996696425] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:46,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:46,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019952849] [2023-03-31 01:51:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:46,415 INFO L87 Difference]: Start difference. First operand 748 states and 1165 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 01:51:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:48,011 INFO L93 Difference]: Finished difference Result 1867 states and 2951 transitions. [2023-03-31 01:51:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:51:48,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 165 [2023-03-31 01:51:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:48,018 INFO L225 Difference]: With dead ends: 1867 [2023-03-31 01:51:48,018 INFO L226 Difference]: Without dead ends: 1207 [2023-03-31 01:51:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:48,027 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 494 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:48,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1306 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:51:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-03-31 01:51:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2023-03-31 01:51:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1201 states have (on average 1.5703580349708577) internal successors, (1886), 1201 states have internal predecessors, (1886), 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 01:51:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1889 transitions. [2023-03-31 01:51:48,103 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1889 transitions. Word has length 165 [2023-03-31 01:51:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:48,103 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1889 transitions. [2023-03-31 01:51:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 01:51:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1889 transitions. [2023-03-31 01:51:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-03-31 01:51:48,108 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:48,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:48,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:51:48,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:48,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2055913464, now seen corresponding path program 1 times [2023-03-31 01:51:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465562494] [2023-03-31 01:51:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:48,476 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 01:51:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465562494] [2023-03-31 01:51:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465562494] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:48,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574717296] [2023-03-31 01:51:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:48,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:48,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:48,479 INFO L87 Difference]: Start difference. First operand 1205 states and 1889 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 01:51:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:50,288 INFO L93 Difference]: Finished difference Result 3094 states and 4894 transitions. [2023-03-31 01:51:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:51:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 167 [2023-03-31 01:51:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:50,298 INFO L225 Difference]: With dead ends: 3094 [2023-03-31 01:51:50,298 INFO L226 Difference]: Without dead ends: 1990 [2023-03-31 01:51:50,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:50,301 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 478 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:50,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1420 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:51:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2023-03-31 01:51:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2023-03-31 01:51:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1984 states have (on average 1.5725806451612903) internal successors, (3120), 1984 states have internal predecessors, (3120), 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 01:51:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3123 transitions. [2023-03-31 01:51:50,403 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3123 transitions. Word has length 167 [2023-03-31 01:51:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:50,404 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 3123 transitions. [2023-03-31 01:51:50,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 01:51:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3123 transitions. [2023-03-31 01:51:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-03-31 01:51:50,410 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:50,410 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] [2023-03-31 01:51:50,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:51:50,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:50,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash -714595516, now seen corresponding path program 1 times [2023-03-31 01:51:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:50,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912328438] [2023-03-31 01:51:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:50,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:50,741 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 01:51:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912328438] [2023-03-31 01:51:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912328438] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750649804] [2023-03-31 01:51:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:50,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:50,751 INFO L87 Difference]: Start difference. First operand 1988 states and 3123 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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 01:51:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:52,608 INFO L93 Difference]: Finished difference Result 5163 states and 8147 transitions. [2023-03-31 01:51:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:51:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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 169 [2023-03-31 01:51:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:52,621 INFO L225 Difference]: With dead ends: 5163 [2023-03-31 01:51:52,621 INFO L226 Difference]: Without dead ends: 3289 [2023-03-31 01:51:52,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:52,626 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 463 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:52,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1385 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:51:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2023-03-31 01:51:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3287. [2023-03-31 01:51:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3283 states have (on average 1.5686871763630825) internal successors, (5150), 3283 states have internal predecessors, (5150), 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 01:51:52,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5153 transitions. [2023-03-31 01:51:52,839 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5153 transitions. Word has length 169 [2023-03-31 01:51:52,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:52,839 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 5153 transitions. [2023-03-31 01:51:52,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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 01:51:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5153 transitions. [2023-03-31 01:51:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-03-31 01:51:52,848 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:52,848 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] [2023-03-31 01:51:52,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:51:52,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:52,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1061650206, now seen corresponding path program 1 times [2023-03-31 01:51:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750440192] [2023-03-31 01:51:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:53,167 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 01:51:53,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:53,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750440192] [2023-03-31 01:51:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750440192] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261633381] [2023-03-31 01:51:53,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:53,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:53,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:53,172 INFO L87 Difference]: Start difference. First operand 3287 states and 5153 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 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 01:51:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:54,799 INFO L93 Difference]: Finished difference Result 8508 states and 13348 transitions. [2023-03-31 01:51:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:51:54,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 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 171 [2023-03-31 01:51:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:54,820 INFO L225 Difference]: With dead ends: 8508 [2023-03-31 01:51:54,820 INFO L226 Difference]: Without dead ends: 5348 [2023-03-31 01:51:54,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:51:54,828 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 449 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:54,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1201 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:51:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2023-03-31 01:51:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5346. [2023-03-31 01:51:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5342 states have (on average 1.5582178959191315) internal successors, (8324), 5342 states have internal predecessors, (8324), 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 01:51:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 8327 transitions. [2023-03-31 01:51:55,209 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 8327 transitions. Word has length 171 [2023-03-31 01:51:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:55,209 INFO L495 AbstractCegarLoop]: Abstraction has 5346 states and 8327 transitions. [2023-03-31 01:51:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 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 01:51:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 8327 transitions. [2023-03-31 01:51:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-03-31 01:51:55,224 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:55,224 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] [2023-03-31 01:51:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:51:55,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:55,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2032551020, now seen corresponding path program 1 times [2023-03-31 01:51:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48519169] [2023-03-31 01:51:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:55,713 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 01:51:55,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48519169] [2023-03-31 01:51:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48519169] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:55,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:55,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:51:55,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107170690] [2023-03-31 01:51:55,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:55,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:51:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:55,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:51:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:51:55,716 INFO L87 Difference]: Start difference. First operand 5346 states and 8327 transitions. Second operand has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 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 01:51:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:59,182 INFO L93 Difference]: Finished difference Result 36369 states and 56597 transitions. [2023-03-31 01:51:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:51:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 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 173 [2023-03-31 01:51:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:59,286 INFO L225 Difference]: With dead ends: 36369 [2023-03-31 01:51:59,286 INFO L226 Difference]: Without dead ends: 31154 [2023-03-31 01:51:59,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:51:59,308 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 7107 mSDsluCounter, 7393 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7107 SdHoareTripleChecker+Valid, 8097 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7107 Valid, 8097 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:51:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31154 states. [2023-03-31 01:52:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31154 to 10629. [2023-03-31 01:52:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10629 states, 10625 states have (on average 1.5423058823529412) internal successors, (16387), 10625 states have internal predecessors, (16387), 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 01:52:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10629 states to 10629 states and 16390 transitions. [2023-03-31 01:52:01,013 INFO L78 Accepts]: Start accepts. Automaton has 10629 states and 16390 transitions. Word has length 173 [2023-03-31 01:52:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:01,013 INFO L495 AbstractCegarLoop]: Abstraction has 10629 states and 16390 transitions. [2023-03-31 01:52:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 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 01:52:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10629 states and 16390 transitions. [2023-03-31 01:52:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-03-31 01:52:01,040 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:01,040 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] [2023-03-31 01:52:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:52:01,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:01,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -307191309, now seen corresponding path program 1 times [2023-03-31 01:52:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731617396] [2023-03-31 01:52:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:01,328 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 01:52:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731617396] [2023-03-31 01:52:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731617396] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:52:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160485888] [2023-03-31 01:52:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:01,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:52:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:52:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:52:01,330 INFO L87 Difference]: Start difference. First operand 10629 states and 16390 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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 01:52:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:04,823 INFO L93 Difference]: Finished difference Result 30005 states and 46192 transitions. [2023-03-31 01:52:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:52:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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 176 [2023-03-31 01:52:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:04,872 INFO L225 Difference]: With dead ends: 30005 [2023-03-31 01:52:04,872 INFO L226 Difference]: Without dead ends: 19433 [2023-03-31 01:52:04,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:52:04,898 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 504 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:04,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1599 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:52:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2023-03-31 01:52:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19431. [2023-03-31 01:52:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19431 states, 19427 states have (on average 1.5303443660884337) internal successors, (29730), 19427 states have internal predecessors, (29730), 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 01:52:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19431 states to 19431 states and 29733 transitions. [2023-03-31 01:52:06,748 INFO L78 Accepts]: Start accepts. Automaton has 19431 states and 29733 transitions. Word has length 176 [2023-03-31 01:52:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 19431 states and 29733 transitions. [2023-03-31 01:52:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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 01:52:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19431 states and 29733 transitions. [2023-03-31 01:52:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-03-31 01:52:06,799 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:06,799 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] [2023-03-31 01:52:06,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:52:06,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:06,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1825051301, now seen corresponding path program 1 times [2023-03-31 01:52:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:06,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626602079] [2023-03-31 01:52:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:07,092 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 01:52:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626602079] [2023-03-31 01:52:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626602079] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:52:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286606254] [2023-03-31 01:52:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:52:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:52:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:52:07,094 INFO L87 Difference]: Start difference. First operand 19431 states and 29733 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 01:52:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:11,700 INFO L93 Difference]: Finished difference Result 56395 states and 86176 transitions. [2023-03-31 01:52:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:52:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 177 [2023-03-31 01:52:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:11,795 INFO L225 Difference]: With dead ends: 56395 [2023-03-31 01:52:11,795 INFO L226 Difference]: Without dead ends: 37231 [2023-03-31 01:52:11,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:52:11,836 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 535 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:11,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1321 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:52:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37231 states. [2023-03-31 01:52:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37231 to 37229. [2023-03-31 01:52:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37229 states, 37225 states have (on average 1.5194089993284083) internal successors, (56560), 37225 states have internal predecessors, (56560), 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 01:52:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37229 states to 37229 states and 56563 transitions. [2023-03-31 01:52:15,320 INFO L78 Accepts]: Start accepts. Automaton has 37229 states and 56563 transitions. Word has length 177 [2023-03-31 01:52:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:15,321 INFO L495 AbstractCegarLoop]: Abstraction has 37229 states and 56563 transitions. [2023-03-31 01:52:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 01:52:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 37229 states and 56563 transitions. [2023-03-31 01:52:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-03-31 01:52:15,401 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:15,401 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] [2023-03-31 01:52:15,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:52:15,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:15,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 278525766, now seen corresponding path program 1 times [2023-03-31 01:52:15,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:15,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283792372] [2023-03-31 01:52:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:15,709 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 01:52:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:15,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283792372] [2023-03-31 01:52:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283792372] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:52:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370383566] [2023-03-31 01:52:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:15,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:52:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:15,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:52:15,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:52:15,712 INFO L87 Difference]: Start difference. First operand 37229 states and 56563 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 01:52:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:52:23,318 INFO L93 Difference]: Finished difference Result 107525 states and 162986 transitions. [2023-03-31 01:52:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:52:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 177 [2023-03-31 01:52:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:52:23,492 INFO L225 Difference]: With dead ends: 107525 [2023-03-31 01:52:23,492 INFO L226 Difference]: Without dead ends: 71074 [2023-03-31 01:52:23,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:52:23,563 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 517 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:52:23,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1321 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:52:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71074 states. [2023-03-31 01:52:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71074 to 71072. [2023-03-31 01:52:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71072 states, 71068 states have (on average 1.5063882478752744) internal successors, (107056), 71068 states have internal predecessors, (107056), 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 01:52:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71072 states to 71072 states and 107059 transitions. [2023-03-31 01:52:30,728 INFO L78 Accepts]: Start accepts. Automaton has 71072 states and 107059 transitions. Word has length 177 [2023-03-31 01:52:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:52:30,728 INFO L495 AbstractCegarLoop]: Abstraction has 71072 states and 107059 transitions. [2023-03-31 01:52:30,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 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 01:52:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 71072 states and 107059 transitions. [2023-03-31 01:52:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-03-31 01:52:30,845 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:52:30,845 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] [2023-03-31 01:52:30,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:52:30,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:52:30,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:52:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2098940513, now seen corresponding path program 1 times [2023-03-31 01:52:30,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:52:30,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043509404] [2023-03-31 01:52:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:52:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:52:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:52:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:52:31,572 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 01:52:31,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:52:31,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043509404] [2023-03-31 01:52:31,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043509404] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:52:31,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:52:31,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:52:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514610827] [2023-03-31 01:52:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:52:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:52:31,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:52:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:52:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:52:31,575 INFO L87 Difference]: Start difference. First operand 71072 states and 107059 transitions. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 8 states have internal predecessors, (174), 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)