/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:47:49,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:47:49,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:47:49,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:47:49,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:47:49,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:47:49,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:47:49,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:47:49,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:47:49,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:47:49,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:47:49,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:47:49,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:47:49,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:47:49,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:47:49,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:47:49,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:47:49,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:47:49,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:47:49,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:47:49,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:47:49,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:47:49,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:47:49,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:47:49,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:47:50,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:47:50,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:47:50,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:47:50,005 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 01:47:50,019 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:47:50,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:47:50,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:47:50,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:47:50,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:47:50,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:47:50,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:47:50,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:47:50,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:47:50,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:47:50,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:47:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:47:50,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:47:50,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:47:50,023 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:47:50,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:47:50,023 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:47:50,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:47:50,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:47:50,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:47:50,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:47:50,207 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:47:50,207 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:47:50,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-03-31 01:47:51,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:47:51,560 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:47:51,561 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-03-31 01:47:51,569 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1fbe0ecc/38ec6ae7aa694cd5ae200414f3dc174d/FLAG6e30db4ee [2023-03-31 01:47:51,578 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1fbe0ecc/38ec6ae7aa694cd5ae200414f3dc174d [2023-03-31 01:47:51,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:47:51,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:47:51,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:47:51,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:47:51,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:47:51,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:47:51" (1/1) ... [2023-03-31 01:47:51,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21637da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:51, skipping insertion in model container [2023-03-31 01:47:51,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:47:51" (1/1) ... [2023-03-31 01:47:51,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:47:51,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:47:51,880 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-03-31 01:47:51,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:47:51,967 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:47:52,026 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-03-31 01:47:52,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:47:52,104 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:47:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52 WrapperNode [2023-03-31 01:47:52,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:47:52,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:47:52,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:47:52,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:47:52,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:47:52,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:47:52,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:47:52,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:47:52,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (1/1) ... [2023-03-31 01:47:52,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:47:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:47:52,196 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 01:47:52,198 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 01:47:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:47:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:47:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:47:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:47:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:47:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:47:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:47:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:47:52,363 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:47:52,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:47:53,044 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:47:53,052 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:47:53,052 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:47:53,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:47:53 BoogieIcfgContainer [2023-03-31 01:47:53,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:47:53,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:47:53,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:47:53,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:47:53,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:47:51" (1/3) ... [2023-03-31 01:47:53,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f9553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:47:53, skipping insertion in model container [2023-03-31 01:47:53,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:52" (2/3) ... [2023-03-31 01:47:53,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f9553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:47:53, skipping insertion in model container [2023-03-31 01:47:53,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:47:53" (3/3) ... [2023-03-31 01:47:53,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-03-31 01:47:53,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:47:53,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:47:53,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:47:53,123 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;@3fd58f93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:47:53,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:47:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 451 states, 423 states have (on average 1.6406619385342789) internal successors, (694), 446 states have internal predecessors, (694), 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 01:47:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-03-31 01:47:53,141 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:53,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:53,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:53,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2071131911, now seen corresponding path program 1 times [2023-03-31 01:47:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:53,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122067308] [2023-03-31 01:47:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:53,711 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 01:47:53,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:53,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122067308] [2023-03-31 01:47:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122067308] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:53,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059823745] [2023-03-31 01:47:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:47:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:47:53,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:53,737 INFO L87 Difference]: Start difference. First operand has 451 states, 423 states have (on average 1.6406619385342789) internal successors, (694), 446 states have internal predecessors, (694), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 01:47:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:54,706 INFO L93 Difference]: Finished difference Result 854 states and 1346 transitions. [2023-03-31 01:47:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:47:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 111 [2023-03-31 01:47:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:54,716 INFO L225 Difference]: With dead ends: 854 [2023-03-31 01:47:54,717 INFO L226 Difference]: Without dead ends: 425 [2023-03-31 01:47:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:54,722 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 131 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:54,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1913 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-03-31 01:47:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2023-03-31 01:47:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 421 states have (on average 1.5605700712589075) internal successors, (657), 421 states have internal predecessors, (657), 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 01:47:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 660 transitions. [2023-03-31 01:47:54,762 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 660 transitions. Word has length 111 [2023-03-31 01:47:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 660 transitions. [2023-03-31 01:47:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 01:47:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 660 transitions. [2023-03-31 01:47:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-03-31 01:47:54,766 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:54,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:47:54,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:54,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2121618456, now seen corresponding path program 1 times [2023-03-31 01:47:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:54,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133776737] [2023-03-31 01:47:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:54,979 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 01:47:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133776737] [2023-03-31 01:47:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133776737] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:54,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:54,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296678629] [2023-03-31 01:47:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:54,982 INFO L87 Difference]: Start difference. First operand 425 states and 660 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 01:47:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:55,971 INFO L93 Difference]: Finished difference Result 1049 states and 1655 transitions. [2023-03-31 01:47:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 134 [2023-03-31 01:47:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:55,975 INFO L225 Difference]: With dead ends: 1049 [2023-03-31 01:47:55,975 INFO L226 Difference]: Without dead ends: 669 [2023-03-31 01:47:55,976 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 01:47:55,977 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 477 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:55,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1170 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:47:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-03-31 01:47:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2023-03-31 01:47:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 663 states have (on average 1.5671191553544495) internal successors, (1039), 663 states have internal predecessors, (1039), 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 01:47:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1042 transitions. [2023-03-31 01:47:56,033 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1042 transitions. Word has length 134 [2023-03-31 01:47:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:56,039 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1042 transitions. [2023-03-31 01:47:56,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 01:47:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1042 transitions. [2023-03-31 01:47:56,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-03-31 01:47:56,042 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:56,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:56,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:47:56,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:56,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1795947526, now seen corresponding path program 1 times [2023-03-31 01:47:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:56,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835634872] [2023-03-31 01:47:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:56,213 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 01:47:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835634872] [2023-03-31 01:47:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835634872] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102247595] [2023-03-31 01:47:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:56,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:56,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:56,216 INFO L87 Difference]: Start difference. First operand 667 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 01:47:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:57,149 INFO L93 Difference]: Finished difference Result 1683 states and 2656 transitions. [2023-03-31 01:47:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 137 [2023-03-31 01:47:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:57,153 INFO L225 Difference]: With dead ends: 1683 [2023-03-31 01:47:57,154 INFO L226 Difference]: Without dead ends: 1074 [2023-03-31 01:47:57,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:57,156 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 462 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:57,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1135 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:47:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-03-31 01:47:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1072. [2023-03-31 01:47:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1068 states have (on average 1.5674157303370786) internal successors, (1674), 1068 states have internal predecessors, (1674), 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 01:47:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1677 transitions. [2023-03-31 01:47:57,197 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1677 transitions. Word has length 137 [2023-03-31 01:47:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:57,197 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1677 transitions. [2023-03-31 01:47:57,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 01:47:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1677 transitions. [2023-03-31 01:47:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-03-31 01:47:57,199 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:57,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:57,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:47:57,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:57,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -671947435, now seen corresponding path program 1 times [2023-03-31 01:47:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863223245] [2023-03-31 01:47:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:57,366 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 01:47:57,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:57,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863223245] [2023-03-31 01:47:57,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863223245] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135451810] [2023-03-31 01:47:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:57,368 INFO L87 Difference]: Start difference. First operand 1072 states and 1677 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 01:47:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:58,348 INFO L93 Difference]: Finished difference Result 2722 states and 4280 transitions. [2023-03-31 01:47:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 140 [2023-03-31 01:47:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:58,356 INFO L225 Difference]: With dead ends: 2722 [2023-03-31 01:47:58,356 INFO L226 Difference]: Without dead ends: 1721 [2023-03-31 01:47:58,358 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 01:47:58,365 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 447 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:58,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1100 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:47:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-03-31 01:47:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2023-03-31 01:47:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1715 states have (on average 1.5603498542274052) internal successors, (2676), 1715 states have internal predecessors, (2676), 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 01:47:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2679 transitions. [2023-03-31 01:47:58,433 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2679 transitions. Word has length 140 [2023-03-31 01:47:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:58,433 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2679 transitions. [2023-03-31 01:47:58,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 01:47:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2679 transitions. [2023-03-31 01:47:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-03-31 01:47:58,437 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:58,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:58,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:47:58,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:58,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:58,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1491393171, now seen corresponding path program 1 times [2023-03-31 01:47:58,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:58,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566530944] [2023-03-31 01:47:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:58,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:58,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:58,587 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 01:47:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566530944] [2023-03-31 01:47:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566530944] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84764683] [2023-03-31 01:47:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:58,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:58,589 INFO L87 Difference]: Start difference. First operand 1719 states and 2679 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 01:47:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:59,527 INFO L93 Difference]: Finished difference Result 4319 states and 6733 transitions. [2023-03-31 01:47:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:59,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 143 [2023-03-31 01:47:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:59,535 INFO L225 Difference]: With dead ends: 4319 [2023-03-31 01:47:59,536 INFO L226 Difference]: Without dead ends: 2684 [2023-03-31 01:47:59,538 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 01:47:59,539 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 432 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:59,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1065 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:47:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2023-03-31 01:47:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2682. [2023-03-31 01:47:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2678 states have (on average 1.5436893203883495) internal successors, (4134), 2678 states have internal predecessors, (4134), 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 01:47:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4137 transitions. [2023-03-31 01:47:59,691 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4137 transitions. Word has length 143 [2023-03-31 01:47:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:59,691 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4137 transitions. [2023-03-31 01:47:59,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 01:47:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4137 transitions. [2023-03-31 01:47:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-03-31 01:47:59,697 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:59,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:47:59,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:59,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash 458355798, now seen corresponding path program 1 times [2023-03-31 01:47:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520164147] [2023-03-31 01:47:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:59,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:59,894 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 01:47:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520164147] [2023-03-31 01:47:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520164147] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:59,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:59,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664665622] [2023-03-31 01:47:59,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:59,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:47:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:47:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:47:59,896 INFO L87 Difference]: Start difference. First operand 2682 states and 4137 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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 01:48:01,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:01,440 INFO L93 Difference]: Finished difference Result 14021 states and 21623 transitions. [2023-03-31 01:48:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:48:01,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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 146 [2023-03-31 01:48:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:01,477 INFO L225 Difference]: With dead ends: 14021 [2023-03-31 01:48:01,477 INFO L226 Difference]: Without dead ends: 11427 [2023-03-31 01:48:01,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:48:01,485 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4645 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:01,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 2432 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:48:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11427 states. [2023-03-31 01:48:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11427 to 5192. [2023-03-31 01:48:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5188 states have (on average 1.5210100231303008) internal successors, (7891), 5188 states have internal predecessors, (7891), 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 01:48:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7894 transitions. [2023-03-31 01:48:01,858 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7894 transitions. Word has length 146 [2023-03-31 01:48:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:01,858 INFO L495 AbstractCegarLoop]: Abstraction has 5192 states and 7894 transitions. [2023-03-31 01:48:01,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 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 01:48:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7894 transitions. [2023-03-31 01:48:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:48:01,866 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:01,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:48:01,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:01,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 301892586, now seen corresponding path program 1 times [2023-03-31 01:48:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770891821] [2023-03-31 01:48:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:02,023 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 01:48:02,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:02,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770891821] [2023-03-31 01:48:02,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770891821] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:02,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:02,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:02,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561292589] [2023-03-31 01:48:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:02,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:02,025 INFO L87 Difference]: Start difference. First operand 5192 states and 7894 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:03,445 INFO L93 Difference]: Finished difference Result 14346 states and 21728 transitions. [2023-03-31 01:48:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-03-31 01:48:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:03,485 INFO L225 Difference]: With dead ends: 14346 [2023-03-31 01:48:03,486 INFO L226 Difference]: Without dead ends: 9595 [2023-03-31 01:48:03,494 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 01:48:03,495 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 449 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:03,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:48:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2023-03-31 01:48:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 9593. [2023-03-31 01:48:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 9589 states have (on average 1.50130357701533) internal successors, (14396), 9589 states have internal predecessors, (14396), 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 01:48:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 14399 transitions. [2023-03-31 01:48:04,103 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 14399 transitions. Word has length 150 [2023-03-31 01:48:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:04,105 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 14399 transitions. [2023-03-31 01:48:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 14399 transitions. [2023-03-31 01:48:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:48:04,124 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:04,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:48:04,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:04,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2119910163, now seen corresponding path program 1 times [2023-03-31 01:48:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305381150] [2023-03-31 01:48:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:04,306 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 01:48:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305381150] [2023-03-31 01:48:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305381150] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:04,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:04,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:04,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964440106] [2023-03-31 01:48:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:04,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:04,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:04,308 INFO L87 Difference]: Start difference. First operand 9593 states and 14399 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:06,272 INFO L93 Difference]: Finished difference Result 27052 states and 40433 transitions. [2023-03-31 01:48:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-03-31 01:48:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:06,299 INFO L225 Difference]: With dead ends: 27052 [2023-03-31 01:48:06,300 INFO L226 Difference]: Without dead ends: 17844 [2023-03-31 01:48:06,313 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 01:48:06,314 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 468 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:06,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:48:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2023-03-31 01:48:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 17842. [2023-03-31 01:48:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17842 states, 17838 states have (on average 1.4803789662518219) internal successors, (26407), 17838 states have internal predecessors, (26407), 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 01:48:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17842 states to 17842 states and 26410 transitions. [2023-03-31 01:48:07,501 INFO L78 Accepts]: Start accepts. Automaton has 17842 states and 26410 transitions. Word has length 150 [2023-03-31 01:48:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:07,501 INFO L495 AbstractCegarLoop]: Abstraction has 17842 states and 26410 transitions. [2023-03-31 01:48:07,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 17842 states and 26410 transitions. [2023-03-31 01:48:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:48:07,536 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:07,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:48:07,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:07,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1030831086, now seen corresponding path program 1 times [2023-03-31 01:48:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705961097] [2023-03-31 01:48:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:07,746 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 01:48:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705961097] [2023-03-31 01:48:07,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705961097] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:07,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:07,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674837419] [2023-03-31 01:48:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:07,748 INFO L87 Difference]: Start difference. First operand 17842 states and 26410 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:10,986 INFO L93 Difference]: Finished difference Result 50673 states and 74638 transitions. [2023-03-31 01:48:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-03-31 01:48:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:11,051 INFO L225 Difference]: With dead ends: 50673 [2023-03-31 01:48:11,052 INFO L226 Difference]: Without dead ends: 33151 [2023-03-31 01:48:11,078 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 01:48:11,080 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 487 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:11,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1163 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:48:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33151 states. [2023-03-31 01:48:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33151 to 33149. [2023-03-31 01:48:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33149 states, 33145 states have (on average 1.4571730276059738) internal successors, (48298), 33145 states have internal predecessors, (48298), 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 01:48:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33149 states to 33149 states and 48301 transitions. [2023-03-31 01:48:13,793 INFO L78 Accepts]: Start accepts. Automaton has 33149 states and 48301 transitions. Word has length 150 [2023-03-31 01:48:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:13,793 INFO L495 AbstractCegarLoop]: Abstraction has 33149 states and 48301 transitions. [2023-03-31 01:48:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 33149 states and 48301 transitions. [2023-03-31 01:48:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:48:13,854 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:13,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:48:13,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:13,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash 815982757, now seen corresponding path program 1 times [2023-03-31 01:48:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963621558] [2023-03-31 01:48:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:14,057 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 01:48:14,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963621558] [2023-03-31 01:48:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963621558] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:14,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419603325] [2023-03-31 01:48:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:14,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:14,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:14,058 INFO L87 Difference]: Start difference. First operand 33149 states and 48301 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:19,523 INFO L93 Difference]: Finished difference Result 93950 states and 136149 transitions. [2023-03-31 01:48:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-03-31 01:48:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:19,635 INFO L225 Difference]: With dead ends: 93950 [2023-03-31 01:48:19,635 INFO L226 Difference]: Without dead ends: 61072 [2023-03-31 01:48:19,683 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 01:48:19,684 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 506 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:19,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1165 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:48:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61072 states. [2023-03-31 01:48:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61072 to 61070. [2023-03-31 01:48:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61070 states, 61066 states have (on average 1.4328267775849082) internal successors, (87497), 61066 states have internal predecessors, (87497), 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 01:48:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61070 states to 61070 states and 87500 transitions. [2023-03-31 01:48:24,966 INFO L78 Accepts]: Start accepts. Automaton has 61070 states and 87500 transitions. Word has length 150 [2023-03-31 01:48:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:24,966 INFO L495 AbstractCegarLoop]: Abstraction has 61070 states and 87500 transitions. [2023-03-31 01:48:24,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 01:48:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61070 states and 87500 transitions. [2023-03-31 01:48:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-03-31 01:48:25,046 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:25,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:48:25,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:25,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 141910898, now seen corresponding path program 1 times [2023-03-31 01:48:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136076821] [2023-03-31 01:48:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:25,349 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 01:48:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136076821] [2023-03-31 01:48:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136076821] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:25,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:25,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:48:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329881075] [2023-03-31 01:48:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:48:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:48:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:48:25,351 INFO L87 Difference]: Start difference. First operand 61070 states and 87500 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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 01:48:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:33,541 INFO L93 Difference]: Finished difference Result 100183 states and 142159 transitions. [2023-03-31 01:48:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:48:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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 151 [2023-03-31 01:48:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:33,639 INFO L225 Difference]: With dead ends: 100183 [2023-03-31 01:48:33,639 INFO L226 Difference]: Without dead ends: 61276 [2023-03-31 01:48:33,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:48:33,685 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 2149 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:33,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 2584 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-31 01:48:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61276 states. [2023-03-31 01:48:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61276 to 59632. [2023-03-31 01:48:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59632 states, 59628 states have (on average 1.4092205004360367) internal successors, (84029), 59628 states have internal predecessors, (84029), 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 01:48:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59632 states to 59632 states and 84032 transitions. [2023-03-31 01:48:39,579 INFO L78 Accepts]: Start accepts. Automaton has 59632 states and 84032 transitions. Word has length 151 [2023-03-31 01:48:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:39,580 INFO L495 AbstractCegarLoop]: Abstraction has 59632 states and 84032 transitions. [2023-03-31 01:48:39,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 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 01:48:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 59632 states and 84032 transitions. [2023-03-31 01:48:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-03-31 01:48:39,680 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:39,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:39,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:48:39,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:48:39,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash -124712954, now seen corresponding path program 1 times [2023-03-31 01:48:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:39,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002162865] [2023-03-31 01:48:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:39,967 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 01:48:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002162865] [2023-03-31 01:48:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002162865] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:48:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607648394] [2023-03-31 01:48:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:39,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:48:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:48:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:48:39,969 INFO L87 Difference]: Start difference. First operand 59632 states and 84032 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 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 01:48:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:51,314 INFO L93 Difference]: Finished difference Result 130715 states and 186582 transitions. [2023-03-31 01:48:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:48:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 6 states have internal predecessors, (149), 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 152 [2023-03-31 01:48:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:51,498 INFO L225 Difference]: With dead ends: 130715 [2023-03-31 01:48:51,498 INFO L226 Difference]: Without dead ends: 108328 [2023-03-31 01:48:51,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:48:51,539 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 2977 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:51,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 3747 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 01:48:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108328 states.