./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:07:04,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:07:04,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:07:04,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:07:04,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:07:04,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:07:05,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:07:05,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:07:05,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:07:05,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:07:05,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:07:05,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:07:05,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:07:05,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:07:05,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:07:05,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:07:05,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:07:05,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:07:05,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:07:05,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:07:05,015 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:07:05,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:07:05,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:07:05,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:07:05,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:07:05,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:07:05,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:07:05,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:07:05,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:07:05,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:07:05,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:07:05,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:07:05,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:07:05,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:07:05,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:07:05,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:07:05,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:07:05,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:07:05,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:07:05,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:07:05,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:07:05,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:07:05,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:07:05,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:07:05,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:07:05,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:07:05,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:07:05,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:07:05,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:07:05,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:07:05,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:07:05,063 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:07:05,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:07:05,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:07:05,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:07:05,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:07:05,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:07:05,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:07:05,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:07:05,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:07:05,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:07:05,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:07:05,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:07:05,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:07:05,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:07:05,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:07:05,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:07:05,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:05,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:07:05,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:07:05,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:07:05,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:07:05,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:07:05,068 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:07:05,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:07:05,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:07:05,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2022-07-13 22:07:05,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:07:05,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:07:05,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:07:05,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:07:05,293 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:07:05,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2022-07-13 22:07:05,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f1d1383/f783034be1b3478c8b0893ed3e694ab7/FLAGc87506e82 [2022-07-13 22:07:05,676 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:07:05,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2022-07-13 22:07:05,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f1d1383/f783034be1b3478c8b0893ed3e694ab7/FLAGc87506e82 [2022-07-13 22:07:06,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f1d1383/f783034be1b3478c8b0893ed3e694ab7 [2022-07-13 22:07:06,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:07:06,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:07:06,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:06,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:07:06,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:07:06,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407331e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06, skipping insertion in model container [2022-07-13 22:07:06,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:07:06,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:07:06,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-07-13 22:07:06,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:06,323 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:07:06,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-07-13 22:07:06,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:06,367 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:07:06,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06 WrapperNode [2022-07-13 22:07:06,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:06,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:06,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:07:06,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:07:06,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,418 INFO L137 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2022-07-13 22:07:06,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:06,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:07:06,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:07:06,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:07:06,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:07:06,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:07:06,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:07:06,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:07:06,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (1/1) ... [2022-07-13 22:07:06,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:07:06,471 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) [2022-07-13 22:07:06,478 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 [2022-07-13 22:07:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:07:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:07:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:07:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:07:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:07:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:07:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:07:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:07:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:07:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:07:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:07:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:07:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:07:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:07:06,500 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:07:06,561 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:07:06,562 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:07:06,771 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:07:06,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:07:06,818 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:07:06,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:06 BoogieIcfgContainer [2022-07-13 22:07:06,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:07:06,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:07:06,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:07:06,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:07:06,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:07:06" (1/3) ... [2022-07-13 22:07:06,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308509ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:06, skipping insertion in model container [2022-07-13 22:07:06,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:06" (2/3) ... [2022-07-13 22:07:06,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308509ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:06, skipping insertion in model container [2022-07-13 22:07:06,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:06" (3/3) ... [2022-07-13 22:07:06,829 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-07-13 22:07:06,832 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:07:06,839 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:07:06,840 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:07:06,840 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:07:06,898 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:07:06,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2022-07-13 22:07:06,956 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2022-07-13 22:07:06,957 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:07:06,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-07-13 22:07:06,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2022-07-13 22:07:06,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 206 flow [2022-07-13 22:07:06,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:07:06,973 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@591a350c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29b2bb9 [2022-07-13 22:07:06,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:07:07,006 INFO L129 PetriNetUnfolder]: 2/96 cut-off events. [2022-07-13 22:07:07,006 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:07:07,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:07,007 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:07,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1987416869, now seen corresponding path program 1 times [2022-07-13 22:07:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:07,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309082072] [2022-07-13 22:07:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309082072] [2022-07-13 22:07:07,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309082072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:07,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:07,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:07:07,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554837088] [2022-07-13 22:07:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:07,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:07:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:07:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:07:07,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-07-13 22:07:07,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:07,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-07-13 22:07:07,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:07,873 INFO L129 PetriNetUnfolder]: 46/296 cut-off events. [2022-07-13 22:07:07,873 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-13 22:07:07,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 296 events. 46/296 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1093 event pairs, 27 based on Foata normal form. 5/293 useless extension candidates. Maximal degree in co-relation 301. Up to 64 conditions per place. [2022-07-13 22:07:07,878 INFO L132 encePairwiseOnDemand]: 90/108 looper letters, 44 selfloop transitions, 13 changer transitions 16/136 dead transitions. [2022-07-13 22:07:07,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 451 flow [2022-07-13 22:07:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:07:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:07:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1247 transitions. [2022-07-13 22:07:07,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7216435185185185 [2022-07-13 22:07:07,899 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1247 transitions. [2022-07-13 22:07:07,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1247 transitions. [2022-07-13 22:07:07,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:07,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1247 transitions. [2022-07-13 22:07:07,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.9375) internal successors, (1247), 16 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,920 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 206 flow. Second operand 16 states and 1247 transitions. [2022-07-13 22:07:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 451 flow [2022-07-13 22:07:07,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:07,930 INFO L242 Difference]: Finished difference. Result has 118 places, 98 transitions, 246 flow [2022-07-13 22:07:07,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-07-13 22:07:07,934 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-07-13 22:07:07,934 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 246 flow [2022-07-13 22:07:07,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:07,936 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:07,936 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:07,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:07:07,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1559964915, now seen corresponding path program 2 times [2022-07-13 22:07:07,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:07,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504404854] [2022-07-13 22:07:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:07,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504404854] [2022-07-13 22:07:08,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504404854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:08,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:08,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:07:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921593845] [2022-07-13 22:07:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:07:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:07:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:07:08,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-07-13 22:07:08,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:08,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-07-13 22:07:08,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:08,131 INFO L129 PetriNetUnfolder]: 31/234 cut-off events. [2022-07-13 22:07:08,132 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-13 22:07:08,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 234 events. 31/234 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 720 event pairs, 19 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 361. Up to 57 conditions per place. [2022-07-13 22:07:08,134 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 19 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-07-13 22:07:08,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 297 flow [2022-07-13 22:07:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:07:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:07:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-07-13 22:07:08,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-07-13 22:07:08,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-07-13 22:07:08,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-07-13 22:07:08,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:08,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-07-13 22:07:08,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,138 INFO L186 Difference]: Start difference. First operand has 118 places, 98 transitions, 246 flow. Second operand 3 states and 286 transitions. [2022-07-13 22:07:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 297 flow [2022-07-13 22:07:08,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 287 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:07:08,143 INFO L242 Difference]: Finished difference. Result has 106 places, 98 transitions, 244 flow [2022-07-13 22:07:08,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-07-13 22:07:08,144 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2022-07-13 22:07:08,144 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 244 flow [2022-07-13 22:07:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:08,145 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:07:08,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 787868635, now seen corresponding path program 3 times [2022-07-13 22:07:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:08,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5007010] [2022-07-13 22:07:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:08,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:08,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:08,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5007010] [2022-07-13 22:07:08,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5007010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:08,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:08,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:07:08,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664320098] [2022-07-13 22:07:08,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:08,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:07:08,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:07:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:07:08,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-07-13 22:07:08,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 244 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:08,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-07-13 22:07:08,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:08,608 INFO L129 PetriNetUnfolder]: 45/274 cut-off events. [2022-07-13 22:07:08,608 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-07-13 22:07:08,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 274 events. 45/274 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 963 event pairs, 23 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 279. Up to 60 conditions per place. [2022-07-13 22:07:08,612 INFO L132 encePairwiseOnDemand]: 94/108 looper letters, 32 selfloop transitions, 12 changer transitions 19/126 dead transitions. [2022-07-13 22:07:08,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 441 flow [2022-07-13 22:07:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:07:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:07:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 939 transitions. [2022-07-13 22:07:08,615 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7245370370370371 [2022-07-13 22:07:08,615 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 939 transitions. [2022-07-13 22:07:08,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 939 transitions. [2022-07-13 22:07:08,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:08,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 939 transitions. [2022-07-13 22:07:08,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,624 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,624 INFO L186 Difference]: Start difference. First operand has 106 places, 98 transitions, 244 flow. Second operand 12 states and 939 transitions. [2022-07-13 22:07:08,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 441 flow [2022-07-13 22:07:08,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 126 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:07:08,631 INFO L242 Difference]: Finished difference. Result has 118 places, 95 transitions, 257 flow [2022-07-13 22:07:08,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2022-07-13 22:07:08,633 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-07-13 22:07:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 257 flow [2022-07-13 22:07:08,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:08,634 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:08,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:07:08,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1810189949, now seen corresponding path program 4 times [2022-07-13 22:07:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110101098] [2022-07-13 22:07:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110101098] [2022-07-13 22:07:08,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110101098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:08,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:08,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:07:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403049668] [2022-07-13 22:07:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:07:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:07:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:07:08,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-07-13 22:07:08,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:08,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-07-13 22:07:08,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:08,922 INFO L129 PetriNetUnfolder]: 31/227 cut-off events. [2022-07-13 22:07:08,922 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-07-13 22:07:08,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 227 events. 31/227 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 625 event pairs, 14 based on Foata normal form. 3/228 useless extension candidates. Maximal degree in co-relation 411. Up to 57 conditions per place. [2022-07-13 22:07:08,924 INFO L132 encePairwiseOnDemand]: 100/108 looper letters, 28 selfloop transitions, 7 changer transitions 9/113 dead transitions. [2022-07-13 22:07:08,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 388 flow [2022-07-13 22:07:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:07:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:07:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 661 transitions. [2022-07-13 22:07:08,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7650462962962963 [2022-07-13 22:07:08,927 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 661 transitions. [2022-07-13 22:07:08,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 661 transitions. [2022-07-13 22:07:08,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:08,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 661 transitions. [2022-07-13 22:07:08,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,936 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,936 INFO L186 Difference]: Start difference. First operand has 118 places, 95 transitions, 257 flow. Second operand 8 states and 661 transitions. [2022-07-13 22:07:08,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 388 flow [2022-07-13 22:07:08,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 345 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-07-13 22:07:08,943 INFO L242 Difference]: Finished difference. Result has 111 places, 98 transitions, 249 flow [2022-07-13 22:07:08,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2022-07-13 22:07:08,944 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2022-07-13 22:07:08,944 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 249 flow [2022-07-13 22:07:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:08,949 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:08,950 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:07:08,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1756209965, now seen corresponding path program 5 times [2022-07-13 22:07:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359712757] [2022-07-13 22:07:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:09,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359712757] [2022-07-13 22:07:09,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359712757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:09,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:09,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:07:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004442528] [2022-07-13 22:07:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:09,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:07:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:07:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:07:09,044 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-07-13 22:07:09,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:09,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-07-13 22:07:09,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:09,078 INFO L129 PetriNetUnfolder]: 26/199 cut-off events. [2022-07-13 22:07:09,078 INFO L130 PetriNetUnfolder]: For 29/30 co-relation queries the response was YES. [2022-07-13 22:07:09,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 199 events. 26/199 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 490 event pairs, 13 based on Foata normal form. 5/201 useless extension candidates. Maximal degree in co-relation 228. Up to 53 conditions per place. [2022-07-13 22:07:09,080 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 22 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-07-13 22:07:09,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 319 flow [2022-07-13 22:07:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:07:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:07:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-07-13 22:07:09,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-07-13 22:07:09,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-07-13 22:07:09,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-07-13 22:07:09,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:09,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-07-13 22:07:09,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,083 INFO L186 Difference]: Start difference. First operand has 111 places, 98 transitions, 249 flow. Second operand 3 states and 286 transitions. [2022-07-13 22:07:09,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 319 flow [2022-07-13 22:07:09,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 307 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-13 22:07:09,087 INFO L242 Difference]: Finished difference. Result has 108 places, 98 transitions, 248 flow [2022-07-13 22:07:09,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2022-07-13 22:07:09,089 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2022-07-13 22:07:09,090 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 248 flow [2022-07-13 22:07:09,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:09,090 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:07:09,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -369751189, now seen corresponding path program 6 times [2022-07-13 22:07:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099771296] [2022-07-13 22:07:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:09,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099771296] [2022-07-13 22:07:09,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099771296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:09,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:09,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:07:09,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714287231] [2022-07-13 22:07:09,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:09,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:07:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:07:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:07:09,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-07-13 22:07:09,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:09,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-07-13 22:07:09,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:09,320 INFO L129 PetriNetUnfolder]: 19/186 cut-off events. [2022-07-13 22:07:09,320 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-07-13 22:07:09,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 186 events. 19/186 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 402 event pairs, 14 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 190. Up to 53 conditions per place. [2022-07-13 22:07:09,321 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 23 selfloop transitions, 4 changer transitions 8/104 dead transitions. [2022-07-13 22:07:09,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 335 flow [2022-07-13 22:07:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:07:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:07:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2022-07-13 22:07:09,323 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-07-13 22:07:09,323 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2022-07-13 22:07:09,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2022-07-13 22:07:09,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:09,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2022-07-13 22:07:09,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,327 INFO L186 Difference]: Start difference. First operand has 108 places, 98 transitions, 248 flow. Second operand 7 states and 575 transitions. [2022-07-13 22:07:09,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 335 flow [2022-07-13 22:07:09,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-13 22:07:09,330 INFO L242 Difference]: Finished difference. Result has 113 places, 95 transitions, 236 flow [2022-07-13 22:07:09,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-07-13 22:07:09,332 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-07-13 22:07:09,332 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 236 flow [2022-07-13 22:07:09,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,332 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:09,332 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:07:09,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1562611875, now seen corresponding path program 7 times [2022-07-13 22:07:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826068242] [2022-07-13 22:07:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:09,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826068242] [2022-07-13 22:07:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826068242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:07:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254288221] [2022-07-13 22:07:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:09,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:07:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:07:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:07:09,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-07-13 22:07:09,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 236 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:09,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-07-13 22:07:09,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:09,539 INFO L129 PetriNetUnfolder]: 14/166 cut-off events. [2022-07-13 22:07:09,539 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-07-13 22:07:09,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 166 events. 14/166 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 8 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 199. Up to 44 conditions per place. [2022-07-13 22:07:09,544 INFO L132 encePairwiseOnDemand]: 101/108 looper letters, 22 selfloop transitions, 6 changer transitions 5/102 dead transitions. [2022-07-13 22:07:09,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 102 transitions, 326 flow [2022-07-13 22:07:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:07:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:07:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 651 transitions. [2022-07-13 22:07:09,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7534722222222222 [2022-07-13 22:07:09,547 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 651 transitions. [2022-07-13 22:07:09,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 651 transitions. [2022-07-13 22:07:09,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:09,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 651 transitions. [2022-07-13 22:07:09,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,550 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,551 INFO L186 Difference]: Start difference. First operand has 113 places, 95 transitions, 236 flow. Second operand 8 states and 651 transitions. [2022-07-13 22:07:09,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 102 transitions, 326 flow [2022-07-13 22:07:09,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 102 transitions, 310 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-13 22:07:09,553 INFO L242 Difference]: Finished difference. Result has 112 places, 95 transitions, 240 flow [2022-07-13 22:07:09,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=112, PETRI_TRANSITIONS=95} [2022-07-13 22:07:09,554 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2022-07-13 22:07:09,554 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 95 transitions, 240 flow [2022-07-13 22:07:09,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:09,554 INFO L200 CegarLoopForPetriNet]: 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] [2022-07-13 22:07:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:07:09,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:07:09,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash -595914081, now seen corresponding path program 8 times [2022-07-13 22:07:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:09,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077595834] [2022-07-13 22:07:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:09,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077595834] [2022-07-13 22:07:09,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077595834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:09,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:09,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:07:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144639735] [2022-07-13 22:07:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:09,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:07:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:07:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:07:09,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-07-13 22:07:09,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 95 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:09,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-07-13 22:07:09,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:09,713 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2022-07-13 22:07:09,713 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-13 22:07:09,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 84 events. 4/84 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 122. Up to 10 conditions per place. [2022-07-13 22:07:09,714 INFO L132 encePairwiseOnDemand]: 101/108 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-07-13 22:07:09,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 73 transitions, 227 flow [2022-07-13 22:07:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:07:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:07:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 636 transitions. [2022-07-13 22:07:09,716 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2022-07-13 22:07:09,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 636 transitions. [2022-07-13 22:07:09,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 636 transitions. [2022-07-13 22:07:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:09,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 636 transitions. [2022-07-13 22:07:09,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.5) internal successors, (636), 8 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,720 INFO L186 Difference]: Start difference. First operand has 112 places, 95 transitions, 240 flow. Second operand 8 states and 636 transitions. [2022-07-13 22:07:09,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 73 transitions, 227 flow [2022-07-13 22:07:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 73 transitions, 204 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-13 22:07:09,721 INFO L242 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2022-07-13 22:07:09,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2022-07-13 22:07:09,723 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -17 predicate places. [2022-07-13 22:07:09,723 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2022-07-13 22:07:09,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:09,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 22:07:09,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-13 22:07:09,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 22:07:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:07:09,727 INFO L356 BasicCegarLoop]: Path program histogram: [8] [2022-07-13 22:07:09,730 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:07:09,730 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:07:09,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:07:09 BasicIcfg [2022-07-13 22:07:09,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:07:09,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:07:09,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:07:09,739 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:07:09,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:06" (3/4) ... [2022-07-13 22:07:09,741 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:07:09,745 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-13 22:07:09,745 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-13 22:07:09,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-13 22:07:09,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:07:09,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:07:09,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:07:09,781 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:07:09,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:07:09,782 INFO L158 Benchmark]: Toolchain (without parser) took 3665.76ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 51.2MB in the beginning and 62.5MB in the end (delta: -11.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,782 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:07:09,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.53ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.2MB in the beginning and 75.5MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.74ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 73.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,783 INFO L158 Benchmark]: Boogie Preprocessor took 21.06ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:07:09,783 INFO L158 Benchmark]: RCFGBuilder took 380.89ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 55.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,783 INFO L158 Benchmark]: TraceAbstraction took 2915.57ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.7MB in the beginning and 65.6MB in the end (delta: -10.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,783 INFO L158 Benchmark]: Witness Printer took 42.15ms. Allocated memory is still 119.5MB. Free memory was 65.6MB in the beginning and 62.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:07:09,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.53ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.2MB in the beginning and 75.5MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.74ms. Allocated memory is still 98.6MB. Free memory was 75.5MB in the beginning and 73.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.06ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 380.89ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 55.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2915.57ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 54.7MB in the beginning and 65.6MB in the end (delta: -10.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 42.15ms. Allocated memory is still 119.5MB. Free memory was 65.6MB in the beginning and 62.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 223 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 223 mSDsluCounter, 302 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 612 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1077 IncrementalHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 93 mSDtfsCounter, 1077 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=3, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 736 ConstructedInterpolants, 0 QuantifiedInterpolants, 2244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 22:07:09,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE