/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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:53:46,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:53:46,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:53:46,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:53:46,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:53:46,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:53:46,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:53:46,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:53:46,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:53:46,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:53:46,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:53:46,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:53:46,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:53:46,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:53:46,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:53:46,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:53:46,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:53:46,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:53:46,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:53:46,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:53:46,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:53:46,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:53:46,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:53:46,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:53:46,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:53:46,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:53:46,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:53:46,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:53:46,189 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 01:53:46,216 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:53:46,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:53:46,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:53:46,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:53:46,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:53:46,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:53:46,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:53:46,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:53:46,219 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:53:46,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:53:46,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:53:46,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:53:46,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:53:46,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:53:46,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:53:46,223 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:53:46,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:53:46,223 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:53:46,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:53:46,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:53:46,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:53:46,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:53:46,473 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:53:46,473 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:53:46,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 01:53:47,642 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:53:47,848 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:53:47,848 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 01:53:47,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79421195/59e465d4665b462d9cadbfc641067b71/FLAG14a3ea144 [2023-03-31 01:53:47,868 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79421195/59e465d4665b462d9cadbfc641067b71 [2023-03-31 01:53:47,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:53:47,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:53:47,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:53:47,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:53:47,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:53:47,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:53:47" (1/1) ... [2023-03-31 01:53:47,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dfe1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:47, skipping insertion in model container [2023-03-31 01:53:47,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:53:47" (1/1) ... [2023-03-31 01:53:47,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:53:47,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:53:48,059 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2023-03-31 01:53:48,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:53:48,095 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:53:48,129 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4940,4953] [2023-03-31 01:53:48,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:53:48,155 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:53:48,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48 WrapperNode [2023-03-31 01:53:48,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:53:48,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:53:48,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:53:48,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:53:48,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:53:48,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:53:48,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:53:48,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:53:48,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (1/1) ... [2023-03-31 01:53:48,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:53:48,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:53:48,240 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 01:53:48,253 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 01:53:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:53:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:53:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:53:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:53:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:53:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:53:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:53:48,406 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:53:48,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:53:48,868 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:53:48,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:53:48,878 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:53:48,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:53:48 BoogieIcfgContainer [2023-03-31 01:53:48,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:53:48,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:53:48,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:53:48,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:53:48,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:53:47" (1/3) ... [2023-03-31 01:53:48,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d499de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:53:48, skipping insertion in model container [2023-03-31 01:53:48,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:53:48" (2/3) ... [2023-03-31 01:53:48,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d499de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:53:48, skipping insertion in model container [2023-03-31 01:53:48,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:53:48" (3/3) ... [2023-03-31 01:53:48,887 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 01:53:48,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:53:48,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:53:48,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:53:48,978 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;@4ed39ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:53:48,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:53:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 80 states have (on average 1.7) internal successors, (136), 82 states have internal predecessors, (136), 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 01:53:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 01:53:48,991 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:48,991 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] [2023-03-31 01:53:48,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:48,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1195062078, now seen corresponding path program 1 times [2023-03-31 01:53:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:49,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567914708] [2023-03-31 01:53:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:49,573 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 01:53:49,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:49,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567914708] [2023-03-31 01:53:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567914708] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:49,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:49,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:53:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293803438] [2023-03-31 01:53:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:49,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:53:49,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:53:49,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:53:49,622 INFO L87 Difference]: Start difference. First operand has 87 states, 80 states have (on average 1.7) internal successors, (136), 82 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 01:53:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:50,150 INFO L93 Difference]: Finished difference Result 193 states and 299 transitions. [2023-03-31 01:53:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:53:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 52 [2023-03-31 01:53:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:50,161 INFO L225 Difference]: With dead ends: 193 [2023-03-31 01:53:50,161 INFO L226 Difference]: Without dead ends: 124 [2023-03-31 01:53:50,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:53:50,167 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 88 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:50,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 283 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:53:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-03-31 01:53:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-03-31 01:53:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.4406779661016949) internal successors, (170), 118 states have internal predecessors, (170), 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 01:53:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 173 transitions. [2023-03-31 01:53:50,217 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 173 transitions. Word has length 52 [2023-03-31 01:53:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:50,217 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 173 transitions. [2023-03-31 01:53:50,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 01:53:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 173 transitions. [2023-03-31 01:53:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:53:50,219 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:50,219 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] [2023-03-31 01:53:50,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:53:50,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:50,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash -771157080, now seen corresponding path program 1 times [2023-03-31 01:53:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053982097] [2023-03-31 01:53:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:50,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:50,461 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 01:53:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:50,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053982097] [2023-03-31 01:53:50,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053982097] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:50,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:50,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:53:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355104955] [2023-03-31 01:53:50,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:53:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:53:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:53:50,473 INFO L87 Difference]: Start difference. First operand 122 states and 173 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:53:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:50,846 INFO L93 Difference]: Finished difference Result 290 states and 433 transitions. [2023-03-31 01:53:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:53:50,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-03-31 01:53:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:50,855 INFO L225 Difference]: With dead ends: 290 [2023-03-31 01:53:50,858 INFO L226 Difference]: Without dead ends: 198 [2023-03-31 01:53:50,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:53:50,863 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 62 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:50,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 226 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-03-31 01:53:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2023-03-31 01:53:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.4791666666666667) internal successors, (284), 192 states have internal predecessors, (284), 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 01:53:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2023-03-31 01:53:50,916 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 53 [2023-03-31 01:53:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:50,916 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2023-03-31 01:53:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:53:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2023-03-31 01:53:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:53:50,924 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:50,924 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] [2023-03-31 01:53:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:53:50,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:50,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash -648151665, now seen corresponding path program 1 times [2023-03-31 01:53:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413442926] [2023-03-31 01:53:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:51,124 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 01:53:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413442926] [2023-03-31 01:53:51,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413442926] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:53:51,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510636262] [2023-03-31 01:53:51,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:51,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:53:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:51,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:53:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:53:51,129 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 01:53:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:51,484 INFO L93 Difference]: Finished difference Result 496 states and 749 transitions. [2023-03-31 01:53:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:53:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2023-03-31 01:53:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:51,487 INFO L225 Difference]: With dead ends: 496 [2023-03-31 01:53:51,487 INFO L226 Difference]: Without dead ends: 330 [2023-03-31 01:53:51,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:53:51,489 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 57 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:51,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 222 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-03-31 01:53:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2023-03-31 01:53:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 324 states have (on average 1.4938271604938271) internal successors, (484), 324 states have internal predecessors, (484), 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 01:53:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 487 transitions. [2023-03-31 01:53:51,529 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 487 transitions. Word has length 54 [2023-03-31 01:53:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:51,529 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 487 transitions. [2023-03-31 01:53:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 01:53:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 487 transitions. [2023-03-31 01:53:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 01:53:51,530 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:51,530 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] [2023-03-31 01:53:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:53:51,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:51,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash 886289057, now seen corresponding path program 1 times [2023-03-31 01:53:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:51,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687818187] [2023-03-31 01:53:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:51,737 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 01:53:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687818187] [2023-03-31 01:53:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687818187] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:53:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123686947] [2023-03-31 01:53:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:53:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:53:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:53:51,739 INFO L87 Difference]: Start difference. First operand 328 states and 487 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 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 01:53:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:52,330 INFO L93 Difference]: Finished difference Result 2712 states and 4143 transitions. [2023-03-31 01:53:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:53:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 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 55 [2023-03-31 01:53:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:52,342 INFO L225 Difference]: With dead ends: 2712 [2023-03-31 01:53:52,342 INFO L226 Difference]: Without dead ends: 2414 [2023-03-31 01:53:52,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:53:52,346 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 779 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1057 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2023-03-31 01:53:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 624. [2023-03-31 01:53:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 620 states have (on average 1.5032258064516129) internal successors, (932), 620 states have internal predecessors, (932), 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 01:53:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 935 transitions. [2023-03-31 01:53:52,452 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 935 transitions. Word has length 55 [2023-03-31 01:53:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:52,452 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 935 transitions. [2023-03-31 01:53:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 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 01:53:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 935 transitions. [2023-03-31 01:53:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:53:52,453 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:52,453 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] [2023-03-31 01:53:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:53:52,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:52,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash 427066556, now seen corresponding path program 1 times [2023-03-31 01:53:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801164400] [2023-03-31 01:53:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:52,624 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 01:53:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801164400] [2023-03-31 01:53:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801164400] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:53:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518687014] [2023-03-31 01:53:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:53:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:53:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:53:52,633 INFO L87 Difference]: Start difference. First operand 624 states and 935 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 01:53:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:53,029 INFO L93 Difference]: Finished difference Result 1740 states and 2625 transitions. [2023-03-31 01:53:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:53:53,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-03-31 01:53:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:53,036 INFO L225 Difference]: With dead ends: 1740 [2023-03-31 01:53:53,036 INFO L226 Difference]: Without dead ends: 1146 [2023-03-31 01:53:53,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:53:53,040 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 50 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:53,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 180 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-03-31 01:53:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1128. [2023-03-31 01:53:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1124 states have (on average 1.4839857651245552) internal successors, (1668), 1124 states have internal predecessors, (1668), 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 01:53:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1671 transitions. [2023-03-31 01:53:53,221 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1671 transitions. Word has length 57 [2023-03-31 01:53:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1671 transitions. [2023-03-31 01:53:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 01:53:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1671 transitions. [2023-03-31 01:53:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:53:53,226 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:53,226 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] [2023-03-31 01:53:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:53:53,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:53,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 447115899, now seen corresponding path program 1 times [2023-03-31 01:53:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:53,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163777845] [2023-03-31 01:53:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:53,602 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 01:53:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163777845] [2023-03-31 01:53:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163777845] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:53:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471862957] [2023-03-31 01:53:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:53,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:53:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:53:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:53:53,604 INFO L87 Difference]: Start difference. First operand 1128 states and 1671 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 01:53:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:54,071 INFO L93 Difference]: Finished difference Result 2228 states and 3313 transitions. [2023-03-31 01:53:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:53:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 57 [2023-03-31 01:53:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:54,078 INFO L225 Difference]: With dead ends: 2228 [2023-03-31 01:53:54,078 INFO L226 Difference]: Without dead ends: 1130 [2023-03-31 01:53:54,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:53:54,081 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 167 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:54,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 340 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2023-03-31 01:53:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1128. [2023-03-31 01:53:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 1124 states have (on average 1.4697508896797153) internal successors, (1652), 1124 states have internal predecessors, (1652), 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 01:53:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1655 transitions. [2023-03-31 01:53:54,207 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1655 transitions. Word has length 57 [2023-03-31 01:53:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:54,208 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1655 transitions. [2023-03-31 01:53:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 01:53:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1655 transitions. [2023-03-31 01:53:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:54,211 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:54,211 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] [2023-03-31 01:53:54,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:53:54,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:54,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1215068681, now seen corresponding path program 1 times [2023-03-31 01:53:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241112520] [2023-03-31 01:53:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:54,349 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 01:53:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241112520] [2023-03-31 01:53:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241112520] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:54,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:53:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584784982] [2023-03-31 01:53:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:53:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:53:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:53:54,351 INFO L87 Difference]: Start difference. First operand 1128 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:53:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:54,833 INFO L93 Difference]: Finished difference Result 2159 states and 3197 transitions. [2023-03-31 01:53:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:53:54,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-03-31 01:53:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:54,840 INFO L225 Difference]: With dead ends: 2159 [2023-03-31 01:53:54,840 INFO L226 Difference]: Without dead ends: 1564 [2023-03-31 01:53:54,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:53:54,842 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 69 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:54,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 241 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2023-03-31 01:53:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1562. [2023-03-31 01:53:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1558 states have (on average 1.4621309370988447) internal successors, (2278), 1558 states have internal predecessors, (2278), 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 01:53:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2281 transitions. [2023-03-31 01:53:55,010 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2281 transitions. Word has length 58 [2023-03-31 01:53:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:55,010 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 2281 transitions. [2023-03-31 01:53:55,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:53:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2281 transitions. [2023-03-31 01:53:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:55,011 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:55,011 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] [2023-03-31 01:53:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:53:55,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:55,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash 973781600, now seen corresponding path program 1 times [2023-03-31 01:53:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434293678] [2023-03-31 01:53:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:55,239 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 01:53:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434293678] [2023-03-31 01:53:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434293678] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:53:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170640435] [2023-03-31 01:53:55,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:55,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:53:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:53:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:53:55,241 INFO L87 Difference]: Start difference. First operand 1562 states and 2281 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:55,919 INFO L93 Difference]: Finished difference Result 4118 states and 6051 transitions. [2023-03-31 01:53:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:53:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:53:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:55,930 INFO L225 Difference]: With dead ends: 4118 [2023-03-31 01:53:55,930 INFO L226 Difference]: Without dead ends: 2588 [2023-03-31 01:53:55,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:53:55,934 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 434 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:55,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 115 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2023-03-31 01:53:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2586. [2023-03-31 01:53:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2582 states have (on average 1.458559256390395) internal successors, (3766), 2582 states have internal predecessors, (3766), 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 01:53:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3769 transitions. [2023-03-31 01:53:56,248 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3769 transitions. Word has length 58 [2023-03-31 01:53:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:56,249 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 3769 transitions. [2023-03-31 01:53:56,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3769 transitions. [2023-03-31 01:53:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:56,249 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:56,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:53:56,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:53:56,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:56,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:56,250 INFO L85 PathProgramCache]: Analyzing trace with hash 210917893, now seen corresponding path program 1 times [2023-03-31 01:53:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:56,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472139560] [2023-03-31 01:53:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:56,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:56,450 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 01:53:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472139560] [2023-03-31 01:53:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472139560] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:53:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804229181] [2023-03-31 01:53:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:56,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:53:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:53:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:53:56,453 INFO L87 Difference]: Start difference. First operand 2586 states and 3769 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:57,055 INFO L93 Difference]: Finished difference Result 5140 states and 7506 transitions. [2023-03-31 01:53:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:53:57,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:53:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:57,066 INFO L225 Difference]: With dead ends: 5140 [2023-03-31 01:53:57,066 INFO L226 Difference]: Without dead ends: 2586 [2023-03-31 01:53:57,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:53:57,074 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 264 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:57,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 81 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2023-03-31 01:53:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2023-03-31 01:53:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2582 states have (on average 1.4430673896204493) internal successors, (3726), 2582 states have internal predecessors, (3726), 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 01:53:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3729 transitions. [2023-03-31 01:53:57,411 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3729 transitions. Word has length 58 [2023-03-31 01:53:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:57,412 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 3729 transitions. [2023-03-31 01:53:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3729 transitions. [2023-03-31 01:53:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:57,412 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:57,413 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] [2023-03-31 01:53:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:53:57,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:57,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash 339003200, now seen corresponding path program 1 times [2023-03-31 01:53:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:57,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282752904] [2023-03-31 01:53:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:57,597 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 01:53:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282752904] [2023-03-31 01:53:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282752904] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:53:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83846258] [2023-03-31 01:53:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:57,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:53:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:53:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:53:57,599 INFO L87 Difference]: Start difference. First operand 2586 states and 3729 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:58,212 INFO L93 Difference]: Finished difference Result 5140 states and 7426 transitions. [2023-03-31 01:53:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:53:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:53:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:58,221 INFO L225 Difference]: With dead ends: 5140 [2023-03-31 01:53:58,221 INFO L226 Difference]: Without dead ends: 2586 [2023-03-31 01:53:58,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:53:58,227 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 248 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:58,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 89 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2023-03-31 01:53:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2023-03-31 01:53:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2582 states have (on average 1.4275755228505034) internal successors, (3686), 2582 states have internal predecessors, (3686), 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 01:53:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3689 transitions. [2023-03-31 01:53:58,544 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3689 transitions. Word has length 58 [2023-03-31 01:53:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:58,544 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 3689 transitions. [2023-03-31 01:53:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3689 transitions. [2023-03-31 01:53:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:58,545 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:58,545 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] [2023-03-31 01:53:58,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:53:58,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:58,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1204535589, now seen corresponding path program 1 times [2023-03-31 01:53:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413254103] [2023-03-31 01:53:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:53:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:53:58,737 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 01:53:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:53:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413254103] [2023-03-31 01:53:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413254103] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:53:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:53:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:53:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132212598] [2023-03-31 01:53:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:53:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:53:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:53:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:53:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:53:58,739 INFO L87 Difference]: Start difference. First operand 2586 states and 3689 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:53:59,376 INFO L93 Difference]: Finished difference Result 5140 states and 7346 transitions. [2023-03-31 01:53:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:53:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:53:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:53:59,387 INFO L225 Difference]: With dead ends: 5140 [2023-03-31 01:53:59,387 INFO L226 Difference]: Without dead ends: 2586 [2023-03-31 01:53:59,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:53:59,392 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 232 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:53:59,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 97 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:53:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2023-03-31 01:53:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2023-03-31 01:53:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2582 states have (on average 1.4120836560805576) internal successors, (3646), 2582 states have internal predecessors, (3646), 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 01:53:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3649 transitions. [2023-03-31 01:53:59,798 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3649 transitions. Word has length 58 [2023-03-31 01:53:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:53:59,799 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 3649 transitions. [2023-03-31 01:53:59,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 01:53:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3649 transitions. [2023-03-31 01:53:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:53:59,799 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:53:59,800 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] [2023-03-31 01:53:59,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:53:59,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:53:59,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:53:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 675245088, now seen corresponding path program 1 times [2023-03-31 01:53:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:53:59,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084845764] [2023-03-31 01:53:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:53:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:53:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:00,111 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 01:54:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084845764] [2023-03-31 01:54:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084845764] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:00,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:00,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:54:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360788865] [2023-03-31 01:54:00,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:00,113 INFO L87 Difference]: Start difference. First operand 2586 states and 3649 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 01:54:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:00,841 INFO L93 Difference]: Finished difference Result 3884 states and 5461 transitions. [2023-03-31 01:54:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:00,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 58 [2023-03-31 01:54:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:00,854 INFO L225 Difference]: With dead ends: 3884 [2023-03-31 01:54:00,854 INFO L226 Difference]: Without dead ends: 3882 [2023-03-31 01:54:00,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:00,856 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 139 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:00,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 476 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2023-03-31 01:54:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 2650. [2023-03-31 01:54:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2646 states have (on average 1.3869992441421013) internal successors, (3670), 2646 states have internal predecessors, (3670), 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 01:54:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3673 transitions. [2023-03-31 01:54:01,252 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3673 transitions. Word has length 58 [2023-03-31 01:54:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:01,253 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3673 transitions. [2023-03-31 01:54:01,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 01:54:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3673 transitions. [2023-03-31 01:54:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-03-31 01:54:01,255 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:01,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:01,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:54:01,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:01,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 781763808, now seen corresponding path program 1 times [2023-03-31 01:54:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872118800] [2023-03-31 01:54:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-03-31 01:54:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872118800] [2023-03-31 01:54:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872118800] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462675132] [2023-03-31 01:54:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:01,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:01,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:01,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:01,498 INFO L87 Difference]: Start difference. First operand 2650 states and 3673 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 01:54:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:03,275 INFO L93 Difference]: Finished difference Result 13898 states and 19289 transitions. [2023-03-31 01:54:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 81 [2023-03-31 01:54:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:03,307 INFO L225 Difference]: With dead ends: 13898 [2023-03-31 01:54:03,307 INFO L226 Difference]: Without dead ends: 11280 [2023-03-31 01:54:03,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:03,316 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 489 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:03,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 523 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11280 states. [2023-03-31 01:54:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11280 to 5266. [2023-03-31 01:54:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5262 states have (on average 1.3816039528696313) internal successors, (7270), 5262 states have internal predecessors, (7270), 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 01:54:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 7273 transitions. [2023-03-31 01:54:04,165 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 7273 transitions. Word has length 81 [2023-03-31 01:54:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:04,166 INFO L495 AbstractCegarLoop]: Abstraction has 5266 states and 7273 transitions. [2023-03-31 01:54:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 01:54:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 7273 transitions. [2023-03-31 01:54:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-03-31 01:54:04,168 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:04,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:54:04,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:04,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash 758018586, now seen corresponding path program 1 times [2023-03-31 01:54:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:04,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14200693] [2023-03-31 01:54:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 01:54:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:04,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14200693] [2023-03-31 01:54:04,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14200693] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:04,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:04,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474735275] [2023-03-31 01:54:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:04,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:04,388 INFO L87 Difference]: Start difference. First operand 5266 states and 7273 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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 01:54:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:06,844 INFO L93 Difference]: Finished difference Result 16514 states and 22889 transitions. [2023-03-31 01:54:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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 81 [2023-03-31 01:54:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:06,878 INFO L225 Difference]: With dead ends: 16514 [2023-03-31 01:54:06,878 INFO L226 Difference]: Without dead ends: 13896 [2023-03-31 01:54:06,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:06,888 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 438 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:06,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 570 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13896 states. [2023-03-31 01:54:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13896 to 9162. [2023-03-31 01:54:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9162 states, 9158 states have (on average 1.3760646429351386) internal successors, (12602), 9158 states have internal predecessors, (12602), 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 01:54:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9162 states to 9162 states and 12605 transitions. [2023-03-31 01:54:08,325 INFO L78 Accepts]: Start accepts. Automaton has 9162 states and 12605 transitions. Word has length 81 [2023-03-31 01:54:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:08,325 INFO L495 AbstractCegarLoop]: Abstraction has 9162 states and 12605 transitions. [2023-03-31 01:54:08,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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 01:54:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9162 states and 12605 transitions. [2023-03-31 01:54:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-03-31 01:54:08,327 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:08,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:54:08,328 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:08,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 385492692, now seen corresponding path program 1 times [2023-03-31 01:54:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579277036] [2023-03-31 01:54:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 01:54:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579277036] [2023-03-31 01:54:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579277036] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:08,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267130190] [2023-03-31 01:54:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:08,541 INFO L87 Difference]: Start difference. First operand 9162 states and 12605 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 01:54:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:11,316 INFO L93 Difference]: Finished difference Result 19130 states and 26489 transitions. [2023-03-31 01:54:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:11,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 81 [2023-03-31 01:54:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:11,357 INFO L225 Difference]: With dead ends: 19130 [2023-03-31 01:54:11,357 INFO L226 Difference]: Without dead ends: 16512 [2023-03-31 01:54:11,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:11,369 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 477 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:11,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 586 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16512 states. [2023-03-31 01:54:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16512 to 11778. [2023-03-31 01:54:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 11774 states have (on average 1.3760828945133345) internal successors, (16202), 11774 states have internal predecessors, (16202), 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 01:54:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 16205 transitions. [2023-03-31 01:54:13,186 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 16205 transitions. Word has length 81 [2023-03-31 01:54:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 11778 states and 16205 transitions. [2023-03-31 01:54:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 01:54:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 16205 transitions. [2023-03-31 01:54:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-03-31 01:54:13,190 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:13,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:13,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:54:13,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:13,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1958964052, now seen corresponding path program 1 times [2023-03-31 01:54:13,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:13,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723556682] [2023-03-31 01:54:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 01:54:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723556682] [2023-03-31 01:54:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723556682] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:13,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445220768] [2023-03-31 01:54:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:13,422 INFO L87 Difference]: Start difference. First operand 11778 states and 16205 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 01:54:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:16,723 INFO L93 Difference]: Finished difference Result 20738 states and 28729 transitions. [2023-03-31 01:54:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 82 [2023-03-31 01:54:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:16,755 INFO L225 Difference]: With dead ends: 20738 [2023-03-31 01:54:16,755 INFO L226 Difference]: Without dead ends: 18624 [2023-03-31 01:54:16,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:16,767 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 468 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:16,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 546 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2023-03-31 01:54:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 13890. [2023-03-31 01:54:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13890 states, 13886 states have (on average 1.3776465504825004) internal successors, (19130), 13886 states have internal predecessors, (19130), 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 01:54:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13890 states to 13890 states and 19133 transitions. [2023-03-31 01:54:19,103 INFO L78 Accepts]: Start accepts. Automaton has 13890 states and 19133 transitions. Word has length 82 [2023-03-31 01:54:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:19,104 INFO L495 AbstractCegarLoop]: Abstraction has 13890 states and 19133 transitions. [2023-03-31 01:54:19,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 01:54:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13890 states and 19133 transitions. [2023-03-31 01:54:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-03-31 01:54:19,107 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:19,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:19,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:54:19,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:19,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1217400582, now seen corresponding path program 1 times [2023-03-31 01:54:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588648383] [2023-03-31 01:54:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:54:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588648383] [2023-03-31 01:54:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588648383] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:54:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123079186] [2023-03-31 01:54:19,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:54:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:54:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:54:19,284 INFO L87 Difference]: Start difference. First operand 13890 states and 19133 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 01:54:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:21,282 INFO L93 Difference]: Finished difference Result 25510 states and 35244 transitions. [2023-03-31 01:54:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:54:21,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-03-31 01:54:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:21,296 INFO L225 Difference]: With dead ends: 25510 [2023-03-31 01:54:21,296 INFO L226 Difference]: Without dead ends: 11652 [2023-03-31 01:54:21,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:54:21,321 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 45 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:21,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 225 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11652 states. [2023-03-31 01:54:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11652 to 11650. [2023-03-31 01:54:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11650 states, 11646 states have (on average 1.3705993474154217) internal successors, (15962), 11646 states have internal predecessors, (15962), 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 01:54:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11650 states to 11650 states and 15965 transitions. [2023-03-31 01:54:23,258 INFO L78 Accepts]: Start accepts. Automaton has 11650 states and 15965 transitions. Word has length 83 [2023-03-31 01:54:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:23,258 INFO L495 AbstractCegarLoop]: Abstraction has 11650 states and 15965 transitions. [2023-03-31 01:54:23,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 01:54:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11650 states and 15965 transitions. [2023-03-31 01:54:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-31 01:54:23,261 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:23,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:23,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-03-31 01:54:23,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:23,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash 147370776, now seen corresponding path program 1 times [2023-03-31 01:54:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:23,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226153938] [2023-03-31 01:54:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:54:23,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226153938] [2023-03-31 01:54:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226153938] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:54:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328433905] [2023-03-31 01:54:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:23,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:54:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:54:23,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:54:23,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:54:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:23,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 01:54:23,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:54:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:54:24,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:54:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:54:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328433905] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:54:24,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:54:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-03-31 01:54:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723505923] [2023-03-31 01:54:24,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:54:24,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-31 01:54:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:24,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-31 01:54:24,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:54:24,977 INFO L87 Difference]: Start difference. First operand 11650 states and 15965 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 24 states have internal predecessors, (197), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:54:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:38,272 INFO L93 Difference]: Finished difference Result 67397 states and 91104 transitions. [2023-03-31 01:54:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-03-31 01:54:38,273 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 24 states have internal predecessors, (197), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2023-03-31 01:54:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:38,372 INFO L225 Difference]: With dead ends: 67397 [2023-03-31 01:54:38,372 INFO L226 Difference]: Without dead ends: 55811 [2023-03-31 01:54:38,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=709, Invalid=2371, Unknown=0, NotChecked=0, Total=3080 [2023-03-31 01:54:38,396 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 2400 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:38,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 1026 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:54:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55811 states.