/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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:13:57,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:13:57,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:13:57,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:13:57,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:13:57,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:13:57,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:13:57,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:13:57,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:13:57,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:13:57,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:13:57,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:13:57,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:13:57,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:13:57,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:13:57,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:13:57,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:13:57,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:13:57,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:13:57,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:13:57,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:13:57,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:13:57,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:13:57,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:13:57,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:13:57,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:13:57,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:13:57,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:13:57,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:13:57,204 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:13:57,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:13:57,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:13:57,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:13:57,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:13:57,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:13:57,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:13:57,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:13:57,206 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:13:57,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:13:57,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:13:57,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:13:57,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:13:57,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:13:57,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:13:57,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:13:57,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:13:57,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:13:57,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:13:57,216 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:13:57,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:13:57,217 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:13:57,217 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:13:57,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:13:57,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:13:57,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:13:57,806 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:13:57,806 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:13:57,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:13:59,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:13:59,856 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:13:59,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:13:59,920 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a49e011c/faa0687c716b43dc9f6eabb3043aabde/FLAGe1a47e528 [2023-04-02 06:13:59,934 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a49e011c/faa0687c716b43dc9f6eabb3043aabde [2023-04-02 06:13:59,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:13:59,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:13:59,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:13:59,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:13:59,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:13:59,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:13:59" (1/1) ... [2023-04-02 06:13:59,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f41648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:13:59, skipping insertion in model container [2023-04-02 06:13:59,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:13:59" (1/1) ... [2023-04-02 06:13:59,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:14:00,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:14:00,659 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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-02 06:14:01,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:14:01,808 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:14:01,873 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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-02 06:14:02,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:14:02,570 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:14:02,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02 WrapperNode [2023-04-02 06:14:02,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:14:02,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:14:02,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:14:02,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:14:02,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:02,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:03,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:14:03,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:14:03,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:14:03,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:14:03,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (1/1) ... [2023-04-02 06:14:03,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:14:03,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:14:03,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:14:03,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:14:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:14:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:14:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:14:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:14:03,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:14:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:14:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:14:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:14:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:14:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:14:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:14:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:14:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:14:03,681 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:14:03,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:14:15,053 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:14:15,081 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:14:15,082 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:14:15,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:14:15 BoogieIcfgContainer [2023-04-02 06:14:15,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:14:15,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:14:15,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:14:15,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:14:15,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:13:59" (1/3) ... [2023-04-02 06:14:15,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43f5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:14:15, skipping insertion in model container [2023-04-02 06:14:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:14:02" (2/3) ... [2023-04-02 06:14:15,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f43f5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:14:15, skipping insertion in model container [2023-04-02 06:14:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:14:15" (3/3) ... [2023-04-02 06:14:15,097 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:14:15,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:14:15,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:14:15,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:14:15,260 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;@4a32d0c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:14:15,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:14:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 2873 states, 2867 states have (on average 1.908615277293338) internal successors, (5472), 2868 states have internal predecessors, (5472), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:14:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:14:15,365 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:14:15,366 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] [2023-04-02 06:14:15,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:14:15,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:14:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1067547561, now seen corresponding path program 1 times [2023-04-02 06:14:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:14:15,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772931928] [2023-04-02 06:14:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:14:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:14:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:14:27,272 WARN L223 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:14:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:14:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:14:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:14:27,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:14:27,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772931928] [2023-04-02 06:14:27,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772931928] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:14:27,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:14:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:14:27,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789434212] [2023-04-02 06:14:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:14:27,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:14:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:14:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:14:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:14:27,523 INFO L87 Difference]: Start difference. First operand has 2873 states, 2867 states have (on average 1.908615277293338) internal successors, (5472), 2868 states have internal predecessors, (5472), 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 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:14:37,476 WARN L223 SmtUtils]: Spent 9.67s on a formula simplification that was a NOOP. DAG size: 1498 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:15:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:15:10,704 INFO L93 Difference]: Finished difference Result 4265 states and 8023 transitions. [2023-04-02 06:15:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:15:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:15:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:15:10,735 INFO L225 Difference]: With dead ends: 4265 [2023-04-02 06:15:10,735 INFO L226 Difference]: Without dead ends: 2271 [2023-04-02 06:15:10,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:15:10,750 INFO L413 NwaCegarLoop]: 2666 mSDtfsCounter, 12286 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 5250 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12286 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 5271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:15:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12286 Valid, 2943 Invalid, 5271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 5250 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2023-04-02 06:15:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2023-04-02 06:15:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2269. [2023-04-02 06:15:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2265 states have (on average 1.3037527593818985) internal successors, (2953), 2265 states have internal predecessors, (2953), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 2956 transitions. [2023-04-02 06:15:10,939 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 2956 transitions. Word has length 82 [2023-04-02 06:15:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:15:10,940 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 2956 transitions. [2023-04-02 06:15:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 2956 transitions. [2023-04-02 06:15:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:15:10,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:15:10,950 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] [2023-04-02 06:15:10,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:15:10,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:15:10,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:15:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2082375108, now seen corresponding path program 1 times [2023-04-02 06:15:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:15:10,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086674525] [2023-04-02 06:15:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:15:10,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:15:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:18,285 WARN L223 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:15:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:15:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:15:18,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:15:18,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086674525] [2023-04-02 06:15:18,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086674525] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:15:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:15:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:15:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876092809] [2023-04-02 06:15:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:15:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:15:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:15:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:15:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:15:18,443 INFO L87 Difference]: Start difference. First operand 2269 states and 2956 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:25,690 WARN L223 SmtUtils]: Spent 7.05s on a formula simplification that was a NOOP. DAG size: 1498 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:15:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:15:43,014 INFO L93 Difference]: Finished difference Result 3726 states and 5015 transitions. [2023-04-02 06:15:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:15:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:15:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:15:43,023 INFO L225 Difference]: With dead ends: 3726 [2023-04-02 06:15:43,023 INFO L226 Difference]: Without dead ends: 2108 [2023-04-02 06:15:43,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:15:43,027 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 6421 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6421 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:15:43,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6421 Valid, 1403 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-04-02 06:15:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2023-04-02 06:15:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2106. [2023-04-02 06:15:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2102 states have (on average 1.3529971455756422) internal successors, (2844), 2102 states have internal predecessors, (2844), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2847 transitions. [2023-04-02 06:15:43,113 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2847 transitions. Word has length 83 [2023-04-02 06:15:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:15:43,113 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 2847 transitions. [2023-04-02 06:15:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2847 transitions. [2023-04-02 06:15:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:15:43,118 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:15:43,118 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] [2023-04-02 06:15:43,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:15:43,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:15:43,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:15:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1657427753, now seen corresponding path program 1 times [2023-04-02 06:15:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:15:43,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902499941] [2023-04-02 06:15:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:15:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:15:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:50,255 WARN L223 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:15:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:15:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:15:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:15:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902499941] [2023-04-02 06:15:50,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902499941] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:15:50,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:15:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:15:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082446835] [2023-04-02 06:15:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:15:50,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:15:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:15:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:15:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:15:50,330 INFO L87 Difference]: Start difference. First operand 2106 states and 2847 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:57,112 WARN L223 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 1496 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:16:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:20,345 INFO L93 Difference]: Finished difference Result 3727 states and 5162 transitions. [2023-04-02 06:16:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:20,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2023-04-02 06:16:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:20,358 INFO L225 Difference]: With dead ends: 3727 [2023-04-02 06:16:20,358 INFO L226 Difference]: Without dead ends: 3016 [2023-04-02 06:16:20,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:20,362 INFO L413 NwaCegarLoop]: 2637 mSDtfsCounter, 1667 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:20,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 3884 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2023-04-02 06:16:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2023-04-02 06:16:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3012. [2023-04-02 06:16:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3008 states have (on average 1.3457446808510638) internal successors, (4048), 3008 states have internal predecessors, (4048), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4051 transitions. [2023-04-02 06:16:20,504 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4051 transitions. Word has length 84 [2023-04-02 06:16:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:20,506 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 4051 transitions. [2023-04-02 06:16:20,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4051 transitions. [2023-04-02 06:16:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:16:20,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:20,515 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] [2023-04-02 06:16:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:16:20,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:20,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2045436730, now seen corresponding path program 1 times [2023-04-02 06:16:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:20,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522135431] [2023-04-02 06:16:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:27,612 WARN L223 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:16:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522135431] [2023-04-02 06:16:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522135431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:27,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:16:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100962416] [2023-04-02 06:16:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:16:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:16:27,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:16:27,679 INFO L87 Difference]: Start difference. First operand 3012 states and 4051 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:34,561 WARN L223 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 1496 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:16:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:52,321 INFO L93 Difference]: Finished difference Result 5076 states and 7145 transitions. [2023-04-02 06:16:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:52,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2023-04-02 06:16:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:52,336 INFO L225 Difference]: With dead ends: 5076 [2023-04-02 06:16:52,337 INFO L226 Difference]: Without dead ends: 3977 [2023-04-02 06:16:52,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:52,340 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 1003 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:52,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 3244 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-04-02 06:16:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2023-04-02 06:16:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3975. [2023-04-02 06:16:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3971 states have (on average 1.3727020901536138) internal successors, (5451), 3971 states have internal predecessors, (5451), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5454 transitions. [2023-04-02 06:16:52,532 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5454 transitions. Word has length 84 [2023-04-02 06:16:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:52,532 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5454 transitions. [2023-04-02 06:16:52,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5454 transitions. [2023-04-02 06:16:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:16:52,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:52,547 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] [2023-04-02 06:16:52,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:16:52,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:52,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash -25966437, now seen corresponding path program 1 times [2023-04-02 06:16:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571043309] [2023-04-02 06:16:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:59,660 WARN L223 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:16:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571043309] [2023-04-02 06:16:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571043309] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:16:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939636125] [2023-04-02 06:16:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:59,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:16:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:16:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:16:59,812 INFO L87 Difference]: Start difference. First operand 3975 states and 5454 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:06,752 WARN L223 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 1498 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:17:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:21,129 INFO L93 Difference]: Finished difference Result 7785 states and 10946 transitions. [2023-04-02 06:17:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:17:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:21,145 INFO L225 Difference]: With dead ends: 7785 [2023-04-02 06:17:21,145 INFO L226 Difference]: Without dead ends: 5025 [2023-04-02 06:17:21,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:17:21,152 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 5407 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:21,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5407 Valid, 1126 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-02 06:17:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2023-04-02 06:17:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5023. [2023-04-02 06:17:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5019 states have (on average 1.378162980673441) internal successors, (6917), 5019 states have internal predecessors, (6917), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 6920 transitions. [2023-04-02 06:17:21,420 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 6920 transitions. Word has length 84 [2023-04-02 06:17:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:21,422 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 6920 transitions. [2023-04-02 06:17:21,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 6920 transitions. [2023-04-02 06:17:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:17:21,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:21,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:17:21,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:17:21,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:21,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 342512856, now seen corresponding path program 1 times [2023-04-02 06:17:21,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:21,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366929154] [2023-04-02 06:17:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:21,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:28,346 WARN L223 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:17:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366929154] [2023-04-02 06:17:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366929154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:17:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773871411] [2023-04-02 06:17:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:28,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:17:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:17:28,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:17:28,403 INFO L87 Difference]: Start difference. First operand 5023 states and 6920 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:35,197 WARN L223 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 1496 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:17:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:49,582 INFO L93 Difference]: Finished difference Result 9383 states and 13392 transitions. [2023-04-02 06:17:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:17:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2023-04-02 06:17:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:49,603 INFO L225 Difference]: With dead ends: 9383 [2023-04-02 06:17:49,603 INFO L226 Difference]: Without dead ends: 6798 [2023-04-02 06:17:49,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:17:49,611 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 919 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:49,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2752 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-02 06:17:49,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2023-04-02 06:17:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 6784. [2023-04-02 06:17:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6784 states, 6780 states have (on average 1.3839233038348082) internal successors, (9383), 6780 states have internal predecessors, (9383), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6784 states to 6784 states and 9386 transitions. [2023-04-02 06:17:50,002 INFO L78 Accepts]: Start accepts. Automaton has 6784 states and 9386 transitions. Word has length 84 [2023-04-02 06:17:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:50,002 INFO L495 AbstractCegarLoop]: Abstraction has 6784 states and 9386 transitions. [2023-04-02 06:17:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 6784 states and 9386 transitions. [2023-04-02 06:17:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:17:50,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:50,013 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] [2023-04-02 06:17:50,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:17:50,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:17:50,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1394609826, now seen corresponding path program 1 times [2023-04-02 06:17:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:50,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906519154] [2023-04-02 06:17:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:56,760 WARN L223 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 06:17:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:56,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:56,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906519154] [2023-04-02 06:17:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906519154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:56,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:56,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:17:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256271427] [2023-04-02 06:17:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:56,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:17:56,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:17:56,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:17:56,835 INFO L87 Difference]: Start difference. First operand 6784 states and 9386 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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)