./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8 --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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:13:37,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:37,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:37,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:37,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:37,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:37,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:37,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:37,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:37,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:37,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:37,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:37,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:37,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:37,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:37,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:37,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:37,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:37,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:37,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:37,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:37,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:37,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:37,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:37,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:37,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:37,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:37,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:37,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:37,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:37,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:37,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:37,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:37,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:37,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:37,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:37,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:37,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:37,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:37,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:37,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:37,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:13:37,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:37,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:37,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:37,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:37,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:37,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:37,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:37,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:37,341 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:37,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:37,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:37,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:37,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:37,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:37,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:13:37,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:37,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:13:37,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:37,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:13:37,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:37,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:13:37,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:37,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:37,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:37,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:37,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:37,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:37,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:13:37,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:37,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:37,358 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:13:37,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:13:37,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:13:37,359 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2022-11-16 12:13:37,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:37,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:37,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:37,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:37,769 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:37,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2022-11-16 12:13:37,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/data/dcb6c32db/ac42576916af4e92a3fbca7c79178766/FLAG75d679cf5 [2022-11-16 12:13:38,561 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:38,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2022-11-16 12:13:38,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/data/dcb6c32db/ac42576916af4e92a3fbca7c79178766/FLAG75d679cf5 [2022-11-16 12:13:38,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/data/dcb6c32db/ac42576916af4e92a3fbca7c79178766 [2022-11-16 12:13:38,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:38,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:38,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:38,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:38,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:38,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:38" (1/1) ... [2022-11-16 12:13:38,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4537fced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:38, skipping insertion in model container [2022-11-16 12:13:38,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:38" (1/1) ... [2022-11-16 12:13:38,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:38,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:39,128 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2022-11-16 12:13:39,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:39,424 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:39,440 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2022-11-16 12:13:39,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:39,557 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:39,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39 WrapperNode [2022-11-16 12:13:39,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:39,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:39,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:39,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:39,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,638 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-11-16 12:13:39,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:39,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:39,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:39,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:39,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:39,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:39,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:39,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:39,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (1/1) ... [2022-11-16 12:13:39,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:39,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:39,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:13:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:13:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:13:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:39,827 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:13:39,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:13:39,828 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:13:39,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:13:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:13:39,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:13:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:13:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:13:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:39,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:39,831 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:13:40,060 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:40,073 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:40,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:40,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:40,355 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:13:40,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:40 BoogieIcfgContainer [2022-11-16 12:13:40,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:40,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:40,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:40,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:40,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:38" (1/3) ... [2022-11-16 12:13:40,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb551ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:40, skipping insertion in model container [2022-11-16 12:13:40,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:39" (2/3) ... [2022-11-16 12:13:40,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb551ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:40, skipping insertion in model container [2022-11-16 12:13:40,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:40" (3/3) ... [2022-11-16 12:13:40,377 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2022-11-16 12:13:40,389 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:13:40,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:40,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:13:40,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:13:40,510 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:13:40,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-11-16 12:13:40,642 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2022-11-16 12:13:40,642 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:13:40,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-16 12:13:40,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-11-16 12:13:40,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-11-16 12:13:40,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:40,689 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a88df8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:40,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:13:40,742 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-16 12:13:40,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:13:40,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:40,743 INFO L209 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] [2022-11-16 12:13:40,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1200152320, now seen corresponding path program 1 times [2022-11-16 12:13:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769538383] [2022-11-16 12:13:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:40,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:41,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:41,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769538383] [2022-11-16 12:13:41,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769538383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:41,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:41,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145768835] [2022-11-16 12:13:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:41,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:41,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-16 12:13:41,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-11-16 12:13:41,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:41,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-16 12:13:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:42,505 INFO L130 PetriNetUnfolder]: 579/1369 cut-off events. [2022-11-16 12:13:42,505 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:13:42,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1369 events. 579/1369 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8613 event pairs, 50 based on Foata normal form. 49/1377 useless extension candidates. Maximal degree in co-relation 2306. Up to 289 conditions per place. [2022-11-16 12:13:42,529 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 27 selfloop transitions, 9 changer transitions 62/152 dead transitions. [2022-11-16 12:13:42,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 152 transitions, 518 flow [2022-11-16 12:13:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2022-11-16 12:13:42,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-16 12:13:42,558 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2022-11-16 12:13:42,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2022-11-16 12:13:42,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:42,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2022-11-16 12:13:42,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 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) [2022-11-16 12:13:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:42,586 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 988 transitions. [2022-11-16 12:13:42,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 152 transitions, 518 flow [2022-11-16 12:13:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:13:42,597 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 260 flow [2022-11-16 12:13:42,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2022-11-16 12:13:42,604 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-11-16 12:13:42,604 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 260 flow [2022-11-16 12:13:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-11-16 12:13:42,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:42,605 INFO L209 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] [2022-11-16 12:13:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:13:42,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1929405791, now seen corresponding path program 1 times [2022-11-16 12:13:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:42,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556836202] [2022-11-16 12:13:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:43,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:43,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556836202] [2022-11-16 12:13:43,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556836202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:43,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:43,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156028832] [2022-11-16 12:13:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:43,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:43,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:43,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-16 12:13:43,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-11-16 12:13:43,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:43,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-16 12:13:43,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:43,604 INFO L130 PetriNetUnfolder]: 394/953 cut-off events. [2022-11-16 12:13:43,605 INFO L131 PetriNetUnfolder]: For 2192/2891 co-relation queries the response was YES. [2022-11-16 12:13:43,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 953 events. 394/953 cut-off events. For 2192/2891 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5478 event pairs, 10 based on Foata normal form. 26/951 useless extension candidates. Maximal degree in co-relation 3193. Up to 274 conditions per place. [2022-11-16 12:13:43,615 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 30 selfloop transitions, 16 changer transitions 58/158 dead transitions. [2022-11-16 12:13:43,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 1016 flow [2022-11-16 12:13:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2022-11-16 12:13:43,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8316239316239317 [2022-11-16 12:13:43,619 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2022-11-16 12:13:43,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2022-11-16 12:13:43,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:43,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2022-11-16 12:13:43,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 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) [2022-11-16 12:13:43,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:43,628 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:43,628 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 260 flow. Second operand 13 states and 973 transitions. [2022-11-16 12:13:43,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 1016 flow [2022-11-16 12:13:43,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 992 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-16 12:13:43,640 INFO L231 Difference]: Finished difference. Result has 115 places, 90 transitions, 438 flow [2022-11-16 12:13:43,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=438, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-11-16 12:13:43,642 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2022-11-16 12:13:43,642 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 438 flow [2022-11-16 12:13:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-11-16 12:13:43,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:43,643 INFO L209 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] [2022-11-16 12:13:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:13:43,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1723774, now seen corresponding path program 1 times [2022-11-16 12:13:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:43,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231571829] [2022-11-16 12:13:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:43,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231571829] [2022-11-16 12:13:43,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231571829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:43,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:43,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138370708] [2022-11-16 12:13:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:43,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-16 12:13:43,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 90 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-11-16 12:13:43,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:43,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-16 12:13:43,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:44,198 INFO L130 PetriNetUnfolder]: 172/573 cut-off events. [2022-11-16 12:13:44,199 INFO L131 PetriNetUnfolder]: For 3255/3758 co-relation queries the response was YES. [2022-11-16 12:13:44,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 573 events. 172/573 cut-off events. For 3255/3758 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3337 event pairs, 24 based on Foata normal form. 79/622 useless extension candidates. Maximal degree in co-relation 2131. Up to 157 conditions per place. [2022-11-16 12:13:44,208 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 16 selfloop transitions, 6 changer transitions 28/124 dead transitions. [2022-11-16 12:13:44,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 866 flow [2022-11-16 12:13:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2022-11-16 12:13:44,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-16 12:13:44,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2022-11-16 12:13:44,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2022-11-16 12:13:44,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:44,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2022-11-16 12:13:44,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 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) [2022-11-16 12:13:44,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:44,218 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:44,219 INFO L175 Difference]: Start difference. First operand has 115 places, 90 transitions, 438 flow. Second operand 9 states and 702 transitions. [2022-11-16 12:13:44,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 866 flow [2022-11-16 12:13:44,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 818 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-16 12:13:44,235 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 534 flow [2022-11-16 12:13:44,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=534, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2022-11-16 12:13:44,238 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 36 predicate places. [2022-11-16 12:13:44,239 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 534 flow [2022-11-16 12:13:44,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-11-16 12:13:44,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:44,239 INFO L209 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] [2022-11-16 12:13:44,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:13:44,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:44,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2126721628, now seen corresponding path program 1 times [2022-11-16 12:13:44,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:44,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339470146] [2022-11-16 12:13:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:44,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:44,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339470146] [2022-11-16 12:13:44,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339470146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:44,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:44,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:44,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616996593] [2022-11-16 12:13:44,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:44,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:44,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-16 12:13:44,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-11-16 12:13:44,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:44,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-16 12:13:44,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:44,966 INFO L130 PetriNetUnfolder]: 233/756 cut-off events. [2022-11-16 12:13:44,966 INFO L131 PetriNetUnfolder]: For 4637/6214 co-relation queries the response was YES. [2022-11-16 12:13:44,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 756 events. 233/756 cut-off events. For 4637/6214 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4662 event pairs, 17 based on Foata normal form. 13/744 useless extension candidates. Maximal degree in co-relation 3190. Up to 205 conditions per place. [2022-11-16 12:13:44,977 INFO L137 encePairwiseOnDemand]: 79/90 looper letters, 36 selfloop transitions, 24 changer transitions 42/156 dead transitions. [2022-11-16 12:13:44,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 1403 flow [2022-11-16 12:13:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 958 transitions. [2022-11-16 12:13:44,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8188034188034188 [2022-11-16 12:13:44,981 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 958 transitions. [2022-11-16 12:13:44,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 958 transitions. [2022-11-16 12:13:44,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:44,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 958 transitions. [2022-11-16 12:13:44,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.6923076923077) internal successors, (958), 13 states have internal predecessors, (958), 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) [2022-11-16 12:13:44,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:44,994 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:44,994 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 534 flow. Second operand 13 states and 958 transitions. [2022-11-16 12:13:44,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 1403 flow [2022-11-16 12:13:45,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 156 transitions, 1342 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-11-16 12:13:45,013 INFO L231 Difference]: Finished difference. Result has 126 places, 100 transitions, 696 flow [2022-11-16 12:13:45,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=696, PETRI_PLACES=126, PETRI_TRANSITIONS=100} [2022-11-16 12:13:45,018 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2022-11-16 12:13:45,020 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 100 transitions, 696 flow [2022-11-16 12:13:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-11-16 12:13:45,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:45,024 INFO L209 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] [2022-11-16 12:13:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:13:45,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1682718234, now seen corresponding path program 1 times [2022-11-16 12:13:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:45,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961708320] [2022-11-16 12:13:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:45,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:45,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961708320] [2022-11-16 12:13:45,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961708320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:45,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:45,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233980193] [2022-11-16 12:13:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:45,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:45,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-16 12:13:45,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 100 transitions, 696 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2022-11-16 12:13:45,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:45,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-16 12:13:45,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:45,551 INFO L130 PetriNetUnfolder]: 118/558 cut-off events. [2022-11-16 12:13:45,551 INFO L131 PetriNetUnfolder]: For 5450/6064 co-relation queries the response was YES. [2022-11-16 12:13:45,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 558 events. 118/558 cut-off events. For 5450/6064 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3506 event pairs, 19 based on Foata normal form. 63/601 useless extension candidates. Maximal degree in co-relation 2488. Up to 134 conditions per place. [2022-11-16 12:13:45,559 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 18 selfloop transitions, 7 changer transitions 16/118 dead transitions. [2022-11-16 12:13:45,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 1010 flow [2022-11-16 12:13:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2022-11-16 12:13:45,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-11-16 12:13:45,562 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2022-11-16 12:13:45,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2022-11-16 12:13:45,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:45,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2022-11-16 12:13:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 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) [2022-11-16 12:13:45,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:45,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:45,568 INFO L175 Difference]: Start difference. First operand has 126 places, 100 transitions, 696 flow. Second operand 9 states and 696 transitions. [2022-11-16 12:13:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 1010 flow [2022-11-16 12:13:45,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 950 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-11-16 12:13:45,584 INFO L231 Difference]: Finished difference. Result has 126 places, 97 transitions, 669 flow [2022-11-16 12:13:45,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=126, PETRI_TRANSITIONS=97} [2022-11-16 12:13:45,588 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2022-11-16 12:13:45,588 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 97 transitions, 669 flow [2022-11-16 12:13:45,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2022-11-16 12:13:45,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:45,589 INFO L209 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] [2022-11-16 12:13:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:13:45,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:45,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1454780742, now seen corresponding path program 1 times [2022-11-16 12:13:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876225027] [2022-11-16 12:13:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:45,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:45,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876225027] [2022-11-16 12:13:45,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876225027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:45,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:45,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163411743] [2022-11-16 12:13:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:45,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:45,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-11-16 12:13:45,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 97 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2022-11-16 12:13:45,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:45,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-11-16 12:13:45,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:46,098 INFO L130 PetriNetUnfolder]: 140/781 cut-off events. [2022-11-16 12:13:46,098 INFO L131 PetriNetUnfolder]: For 7148/8283 co-relation queries the response was YES. [2022-11-16 12:13:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 781 events. 140/781 cut-off events. For 7148/8283 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5896 event pairs, 43 based on Foata normal form. 31/785 useless extension candidates. Maximal degree in co-relation 3157. Up to 154 conditions per place. [2022-11-16 12:13:46,108 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 17 selfloop transitions, 7 changer transitions 16/114 dead transitions. [2022-11-16 12:13:46,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 114 transitions, 943 flow [2022-11-16 12:13:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:13:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 695 transitions. [2022-11-16 12:13:46,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8580246913580247 [2022-11-16 12:13:46,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 695 transitions. [2022-11-16 12:13:46,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 695 transitions. [2022-11-16 12:13:46,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:46,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 695 transitions. [2022-11-16 12:13:46,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 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) [2022-11-16 12:13:46,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:46,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-11-16 12:13:46,117 INFO L175 Difference]: Start difference. First operand has 126 places, 97 transitions, 669 flow. Second operand 9 states and 695 transitions. [2022-11-16 12:13:46,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 114 transitions, 943 flow [2022-11-16 12:13:46,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 114 transitions, 864 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-11-16 12:13:46,142 INFO L231 Difference]: Finished difference. Result has 128 places, 94 transitions, 621 flow [2022-11-16 12:13:46,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=128, PETRI_TRANSITIONS=94} [2022-11-16 12:13:46,146 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-11-16 12:13:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 94 transitions, 621 flow [2022-11-16 12:13:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2022-11-16 12:13:46,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:46,147 INFO L209 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] [2022-11-16 12:13:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:13:46,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1025656061, now seen corresponding path program 1 times [2022-11-16 12:13:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972183183] [2022-11-16 12:13:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:46,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:46,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:46,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972183183] [2022-11-16 12:13:46,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972183183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:46,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:46,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:13:46,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041659869] [2022-11-16 12:13:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:13:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:13:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:13:46,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-16 12:13:46,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 94 transitions, 621 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-11-16 12:13:46,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:46,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-16 12:13:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:47,134 INFO L130 PetriNetUnfolder]: 1084/2678 cut-off events. [2022-11-16 12:13:47,135 INFO L131 PetriNetUnfolder]: For 3483/3803 co-relation queries the response was YES. [2022-11-16 12:13:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5950 conditions, 2678 events. 1084/2678 cut-off events. For 3483/3803 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 24363 event pairs, 47 based on Foata normal form. 14/2397 useless extension candidates. Maximal degree in co-relation 5917. Up to 786 conditions per place. [2022-11-16 12:13:47,159 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 17 changer transitions 3/126 dead transitions. [2022-11-16 12:13:47,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 781 flow [2022-11-16 12:13:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:13:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-11-16 12:13:47,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-11-16 12:13:47,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-11-16 12:13:47,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-11-16 12:13:47,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:47,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-11-16 12:13:47,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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) [2022-11-16 12:13:47,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-11-16 12:13:47,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-11-16 12:13:47,169 INFO L175 Difference]: Start difference. First operand has 128 places, 94 transitions, 621 flow. Second operand 10 states and 778 transitions. [2022-11-16 12:13:47,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 781 flow [2022-11-16 12:13:47,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 736 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-16 12:13:47,186 INFO L231 Difference]: Finished difference. Result has 129 places, 110 transitions, 696 flow [2022-11-16 12:13:47,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=696, PETRI_PLACES=129, PETRI_TRANSITIONS=110} [2022-11-16 12:13:47,187 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 47 predicate places. [2022-11-16 12:13:47,187 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 110 transitions, 696 flow [2022-11-16 12:13:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-11-16 12:13:47,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:47,188 INFO L209 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] [2022-11-16 12:13:47,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:13:47,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash 817081122, now seen corresponding path program 1 times [2022-11-16 12:13:47,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:47,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393811144] [2022-11-16 12:13:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:47,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393811144] [2022-11-16 12:13:47,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393811144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:47,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:47,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054396426] [2022-11-16 12:13:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:47,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:47,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-16 12:13:47,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 110 transitions, 696 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2022-11-16 12:13:47,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:47,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-16 12:13:47,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:48,171 INFO L130 PetriNetUnfolder]: 942/2557 cut-off events. [2022-11-16 12:13:48,172 INFO L131 PetriNetUnfolder]: For 6282/7398 co-relation queries the response was YES. [2022-11-16 12:13:48,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8840 conditions, 2557 events. 942/2557 cut-off events. For 6282/7398 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 24961 event pairs, 7 based on Foata normal form. 303/2647 useless extension candidates. Maximal degree in co-relation 8808. Up to 803 conditions per place. [2022-11-16 12:13:48,192 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 18 selfloop transitions, 15 changer transitions 41/148 dead transitions. [2022-11-16 12:13:48,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 148 transitions, 1040 flow [2022-11-16 12:13:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:13:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:13:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1011 transitions. [2022-11-16 12:13:48,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8641025641025641 [2022-11-16 12:13:48,196 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1011 transitions. [2022-11-16 12:13:48,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1011 transitions. [2022-11-16 12:13:48,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:48,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1011 transitions. [2022-11-16 12:13:48,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.76923076923077) internal successors, (1011), 13 states have internal predecessors, (1011), 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) [2022-11-16 12:13:48,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:48,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-11-16 12:13:48,203 INFO L175 Difference]: Start difference. First operand has 129 places, 110 transitions, 696 flow. Second operand 13 states and 1011 transitions. [2022-11-16 12:13:48,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 148 transitions, 1040 flow [2022-11-16 12:13:48,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 148 transitions, 975 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-16 12:13:48,236 INFO L231 Difference]: Finished difference. Result has 141 places, 101 transitions, 625 flow [2022-11-16 12:13:48,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=625, PETRI_PLACES=141, PETRI_TRANSITIONS=101} [2022-11-16 12:13:48,239 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 59 predicate places. [2022-11-16 12:13:48,239 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 101 transitions, 625 flow [2022-11-16 12:13:48,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2022-11-16 12:13:48,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:13:48,240 INFO L209 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] [2022-11-16 12:13:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:13:48,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:13:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1488189155, now seen corresponding path program 1 times [2022-11-16 12:13:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:48,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268925349] [2022-11-16 12:13:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:48,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:48,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:48,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268925349] [2022-11-16 12:13:48,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268925349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:48,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:48,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518456089] [2022-11-16 12:13:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:48,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-16 12:13:48,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 101 transitions, 625 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-11-16 12:13:48,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:48,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-16 12:13:48,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:13:48,894 INFO L130 PetriNetUnfolder]: 129/738 cut-off events. [2022-11-16 12:13:48,894 INFO L131 PetriNetUnfolder]: For 3378/4114 co-relation queries the response was YES. [2022-11-16 12:13:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 738 events. 129/738 cut-off events. For 3378/4114 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6441 event pairs, 2 based on Foata normal form. 147/826 useless extension candidates. Maximal degree in co-relation 2796. Up to 164 conditions per place. [2022-11-16 12:13:48,900 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2022-11-16 12:13:48,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 113 transitions, 828 flow [2022-11-16 12:13:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:13:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:13:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1143 transitions. [2022-11-16 12:13:48,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-16 12:13:48,905 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1143 transitions. [2022-11-16 12:13:48,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1143 transitions. [2022-11-16 12:13:48,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:13:48,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1143 transitions. [2022-11-16 12:13:48,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.2) internal successors, (1143), 15 states have internal predecessors, (1143), 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) [2022-11-16 12:13:48,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 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) [2022-11-16 12:13:48,916 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 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) [2022-11-16 12:13:48,916 INFO L175 Difference]: Start difference. First operand has 141 places, 101 transitions, 625 flow. Second operand 15 states and 1143 transitions. [2022-11-16 12:13:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 113 transitions, 828 flow [2022-11-16 12:13:48,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 746 flow, removed 18 selfloop flow, removed 17 redundant places. [2022-11-16 12:13:48,939 INFO L231 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2022-11-16 12:13:48,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2022-11-16 12:13:48,940 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 45 predicate places. [2022-11-16 12:13:48,941 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2022-11-16 12:13:48,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-11-16 12:13:48,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 12:13:48,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 12:13:48,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 12:13:48,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 12:13:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:13:48,947 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:48,951 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:13:48,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:13:48,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:13:48 BasicIcfg [2022-11-16 12:13:48,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:13:48,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:13:48,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:13:48,963 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:13:48,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:40" (3/4) ... [2022-11-16 12:13:48,967 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:13:48,974 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 12:13:48,974 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 12:13:48,975 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 12:13:48,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 12:13:48,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:13:48,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:13:48,982 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:13:49,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:13:49,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:13:49,023 INFO L158 Benchmark]: Toolchain (without parser) took 10183.94ms. Allocated memory was 113.2MB in the beginning and 390.1MB in the end (delta: 276.8MB). Free memory was 67.9MB in the beginning and 252.1MB in the end (delta: -184.3MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,023 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:13:49,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.47ms. Allocated memory is still 113.2MB. Free memory was 67.7MB in the beginning and 77.3MB in the end (delta: -9.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.37ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 75.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,024 INFO L158 Benchmark]: Boogie Preprocessor took 65.55ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:13:49,024 INFO L158 Benchmark]: RCFGBuilder took 657.00ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 60.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,025 INFO L158 Benchmark]: TraceAbstraction took 8593.84ms. Allocated memory was 113.2MB in the beginning and 390.1MB in the end (delta: 276.8MB). Free memory was 59.7MB in the beginning and 255.3MB in the end (delta: -195.6MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,025 INFO L158 Benchmark]: Witness Printer took 59.54ms. Allocated memory is still 390.1MB. Free memory was 255.3MB in the beginning and 252.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:13:49,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.47ms. Allocated memory is still 113.2MB. Free memory was 67.7MB in the beginning and 77.3MB in the end (delta: -9.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.37ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 75.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.55ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 657.00ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 60.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8593.84ms. Allocated memory was 113.2MB in the beginning and 390.1MB in the end (delta: 276.8MB). Free memory was 59.7MB in the beginning and 255.3MB in the end (delta: -195.6MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. * Witness Printer took 59.54ms. Allocated memory is still 390.1MB. Free memory was 255.3MB in the beginning and 252.1MB 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: 18]: 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 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 414 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 414 mSDsluCounter, 584 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 439 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 533 IncrementalHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 145 mSDtfsCounter, 533 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=696occurred in iteration=4, InterpolantAutomatonStates: 104, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 513 ConstructedInterpolants, 0 QuantifiedInterpolants, 1885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-11-16 12:13:49,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e32af8-7d1c-4f4d-a502-12dd2f4586fc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE