./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --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_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/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_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/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_3fc2901f-359d-4422-aad6-f081ac360ba5/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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- 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 11:25:26,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:25:26,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:25:26,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:25:26,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:25:26,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:25:26,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:25:26,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:25:26,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:25:26,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:25:26,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:25:26,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:25:26,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:25:26,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:25:26,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:25:26,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:25:26,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:25:26,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:25:26,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:25:26,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:25:26,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:25:26,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:25:26,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:25:26,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:25:26,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:25:26,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:25:26,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:25:26,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:25:26,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:25:26,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:25:26,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:25:26,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:25:26,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:25:26,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:25:26,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:25:26,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:25:26,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:25:26,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:25:26,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:25:26,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:25:26,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:25:26,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:25:26,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:25:26,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:25:26,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:25:26,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:25:26,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:25:26,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:25:26,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:25:26,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:25:26,411 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:25:26,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:25:26,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:25:26,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:25:26,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:25:26,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:25:26,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:25:26,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:25:26,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:25:26,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:25:26,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:25:26,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:25:26,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:25:26,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:25:26,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:25:26,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:25:26,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:26,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:25:26,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:25:26,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:25:26,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:25:26,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:25:26,421 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:25:26,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:25:26,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:25:26,423 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_3fc2901f-359d-4422-aad6-f081ac360ba5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2022-11-16 11:25:26,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:25:26,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:25:26,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:25:26,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:25:26,798 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:25:26,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-16 11:25:26,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/data/c025b7952/63bebb13c19646d4b5129a4c38be9eb4/FLAG57604f9cb [2022-11-16 11:25:27,453 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:25:27,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-16 11:25:27,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/data/c025b7952/63bebb13c19646d4b5129a4c38be9eb4/FLAG57604f9cb [2022-11-16 11:25:27,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/data/c025b7952/63bebb13c19646d4b5129a4c38be9eb4 [2022-11-16 11:25:27,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:25:27,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:25:27,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:27,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:25:27,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:25:27,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:27" (1/1) ... [2022-11-16 11:25:27,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d1bc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:27, skipping insertion in model container [2022-11-16 11:25:27,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:27" (1/1) ... [2022-11-16 11:25:27,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:25:27,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:25:28,158 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_3fc2901f-359d-4422-aad6-f081ac360ba5/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-16 11:25:28,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:28,186 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:25:28,240 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_3fc2901f-359d-4422-aad6-f081ac360ba5/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-16 11:25:28,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:28,267 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:25:28,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28 WrapperNode [2022-11-16 11:25:28,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:28,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:28,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:25:28,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:25:28,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,333 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-16 11:25:28,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:28,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:25:28,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:25:28,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:25:28,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,386 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:25:28,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:25:28,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:25:28,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:25:28,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (1/1) ... [2022-11-16 11:25:28,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:28,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:25:28,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:25:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:25:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:25:28,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:25:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:25:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:25:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:25:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:25:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:25:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:25:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:25:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:25:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:25:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:25:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:25:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:25:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:25:28,487 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 11:25:28,586 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:25:28,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:25:28,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:25:28,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:25:28,848 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:25:28,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:28 BoogieIcfgContainer [2022-11-16 11:25:28,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:25:28,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:25:28,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:25:28,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:25:28,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:25:27" (1/3) ... [2022-11-16 11:25:28,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae54659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:28, skipping insertion in model container [2022-11-16 11:25:28,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:28" (2/3) ... [2022-11-16 11:25:28,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae54659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:28, skipping insertion in model container [2022-11-16 11:25:28,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:28" (3/3) ... [2022-11-16 11:25:28,878 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-11-16 11:25:28,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:25:28,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:25:28,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:25:28,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:25:29,057 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:25:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2022-11-16 11:25:29,169 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2022-11-16 11:25:29,170 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:25:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-11-16 11:25:29,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 234 flow [2022-11-16 11:25:29,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 200 flow [2022-11-16 11:25:29,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:29,202 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;@1b1f0b04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:29,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:25:29,261 INFO L130 PetriNetUnfolder]: 7/90 cut-off events. [2022-11-16 11:25:29,262 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:25:29,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:29,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:29,270 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 11:25:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 446398564, now seen corresponding path program 1 times [2022-11-16 11:25:29,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:29,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576834258] [2022-11-16 11:25:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:29,717 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 11:25:29,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:29,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576834258] [2022-11-16 11:25:29,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576834258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:29,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:29,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:25:29,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836096949] [2022-11-16 11:25:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:25:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:25:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:25:29,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 105 [2022-11-16 11:25:29,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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 11:25:29,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:29,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 105 [2022-11-16 11:25:29,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:29,873 INFO L130 PetriNetUnfolder]: 13/115 cut-off events. [2022-11-16 11:25:29,873 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 11:25:29,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 115 events. 13/115 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 2 based on Foata normal form. 11/115 useless extension candidates. Maximal degree in co-relation 100. Up to 20 conditions per place. [2022-11-16 11:25:29,877 INFO L137 encePairwiseOnDemand]: 102/105 looper letters, 8 selfloop transitions, 0 changer transitions 1/88 dead transitions. [2022-11-16 11:25:29,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 210 flow [2022-11-16 11:25:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:25:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:25:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2022-11-16 11:25:29,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-11-16 11:25:29,894 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2022-11-16 11:25:29,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2022-11-16 11:25:29,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:29,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2022-11-16 11:25:29,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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 11:25:29,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 11:25:29,913 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 11:25:29,916 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 200 flow. Second operand 2 states and 197 transitions. [2022-11-16 11:25:29,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 210 flow [2022-11-16 11:25:29,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 198 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:25:29,937 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 180 flow [2022-11-16 11:25:29,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-11-16 11:25:29,948 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2022-11-16 11:25:29,949 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 180 flow [2022-11-16 11:25:29,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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 11:25:29,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:29,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:25:29,951 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 11:25:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2101922214, now seen corresponding path program 1 times [2022-11-16 11:25:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674914690] [2022-11-16 11:25:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:30,715 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 11:25:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:30,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674914690] [2022-11-16 11:25:30,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674914690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:30,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:30,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:25:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571494934] [2022-11-16 11:25:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:30,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:30,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-16 11:25:30,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 11:25:30,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:30,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-16 11:25:30,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:31,030 INFO L130 PetriNetUnfolder]: 79/268 cut-off events. [2022-11-16 11:25:31,031 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-16 11:25:31,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 268 events. 79/268 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 941 event pairs, 9 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 402. Up to 53 conditions per place. [2022-11-16 11:25:31,040 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 30 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2022-11-16 11:25:31,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 285 flow [2022-11-16 11:25:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:25:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:25:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2022-11-16 11:25:31,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-11-16 11:25:31,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2022-11-16 11:25:31,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2022-11-16 11:25:31,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:31,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2022-11-16 11:25:31,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 11:25:31,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:31,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:31,057 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 180 flow. Second operand 6 states and 511 transitions. [2022-11-16 11:25:31,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 285 flow [2022-11-16 11:25:31,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:31,061 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 205 flow [2022-11-16 11:25:31,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-11-16 11:25:31,063 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-11-16 11:25:31,063 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 205 flow [2022-11-16 11:25:31,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 11:25:31,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:31,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:31,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:25:31,065 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 11:25:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash 283615948, now seen corresponding path program 2 times [2022-11-16 11:25:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:31,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067371768] [2022-11-16 11:25:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:31,425 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 11:25:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:31,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067371768] [2022-11-16 11:25:31,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067371768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:31,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:31,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:25:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897069786] [2022-11-16 11:25:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:31,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:31,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:31,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:31,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-16 11:25:31,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 11:25:31,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:31,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-16 11:25:31,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:31,634 INFO L130 PetriNetUnfolder]: 64/245 cut-off events. [2022-11-16 11:25:31,635 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-16 11:25:31,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 245 events. 64/245 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 834 event pairs, 12 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 399. Up to 46 conditions per place. [2022-11-16 11:25:31,638 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 27 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2022-11-16 11:25:31,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 311 flow [2022-11-16 11:25:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:25:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:25:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2022-11-16 11:25:31,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8063492063492064 [2022-11-16 11:25:31,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2022-11-16 11:25:31,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2022-11-16 11:25:31,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:31,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2022-11-16 11:25:31,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 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 11:25:31,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:31,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:31,654 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 205 flow. Second operand 6 states and 508 transitions. [2022-11-16 11:25:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 311 flow [2022-11-16 11:25:31,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:31,662 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 235 flow [2022-11-16 11:25:31,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2022-11-16 11:25:31,665 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2022-11-16 11:25:31,665 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 235 flow [2022-11-16 11:25:31,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 11:25:31,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:31,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:25:31,667 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 11:25:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -870725748, now seen corresponding path program 3 times [2022-11-16 11:25:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:31,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149978609] [2022-11-16 11:25:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:32,090 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 11:25:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:32,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149978609] [2022-11-16 11:25:32,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149978609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:32,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:32,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:25:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473489040] [2022-11-16 11:25:32,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:32,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:25:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:25:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:25:32,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 105 [2022-11-16 11:25:32,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 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 11:25:32,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:32,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 105 [2022-11-16 11:25:32,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:32,276 INFO L130 PetriNetUnfolder]: 60/211 cut-off events. [2022-11-16 11:25:32,276 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-16 11:25:32,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 211 events. 60/211 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 627 event pairs, 1 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 393. Up to 46 conditions per place. [2022-11-16 11:25:32,293 INFO L137 encePairwiseOnDemand]: 97/105 looper letters, 28 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2022-11-16 11:25:32,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 343 flow [2022-11-16 11:25:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:25:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2022-11-16 11:25:32,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8027210884353742 [2022-11-16 11:25:32,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2022-11-16 11:25:32,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2022-11-16 11:25:32,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:32,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2022-11-16 11:25:32,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 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 11:25:32,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 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 11:25:32,302 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 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 11:25:32,302 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 235 flow. Second operand 7 states and 590 transitions. [2022-11-16 11:25:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 343 flow [2022-11-16 11:25:32,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:32,306 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 265 flow [2022-11-16 11:25:32,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2022-11-16 11:25:32,307 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2022-11-16 11:25:32,307 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 265 flow [2022-11-16 11:25:32,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 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 11:25:32,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:32,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:32,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:25:32,309 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 11:25:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 958900308, now seen corresponding path program 4 times [2022-11-16 11:25:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:32,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961964834] [2022-11-16 11:25:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:32,650 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 11:25:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:32,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961964834] [2022-11-16 11:25:32,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961964834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:32,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:32,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:25:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730895605] [2022-11-16 11:25:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:32,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:25:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:25:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:25:32,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:25:32,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 11:25:32,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:32,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:25:32,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:32,986 INFO L130 PetriNetUnfolder]: 224/612 cut-off events. [2022-11-16 11:25:32,986 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-16 11:25:32,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 612 events. 224/612 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3262 event pairs, 41 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 1250. Up to 158 conditions per place. [2022-11-16 11:25:32,993 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 35 selfloop transitions, 7 changer transitions 38/142 dead transitions. [2022-11-16 11:25:32,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 142 transitions, 598 flow [2022-11-16 11:25:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 748 transitions. [2022-11-16 11:25:32,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7915343915343915 [2022-11-16 11:25:32,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 748 transitions. [2022-11-16 11:25:32,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 748 transitions. [2022-11-16 11:25:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:32,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 748 transitions. [2022-11-16 11:25:33,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 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 11:25:33,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:25:33,003 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:25:33,003 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 265 flow. Second operand 9 states and 748 transitions. [2022-11-16 11:25:33,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 142 transitions, 598 flow [2022-11-16 11:25:33,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 582 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:33,016 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 299 flow [2022-11-16 11:25:33,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=299, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-11-16 11:25:33,019 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2022-11-16 11:25:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 299 flow [2022-11-16 11:25:33,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 11:25:33,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:33,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:33,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:25:33,021 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 11:25:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash 387501435, now seen corresponding path program 1 times [2022-11-16 11:25:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:33,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466081907] [2022-11-16 11:25:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:33,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:33,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:33,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466081907] [2022-11-16 11:25:33,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466081907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:33,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531021562] [2022-11-16 11:25:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:33,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:33,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:25:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:33,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:25:33,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:33,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:33,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531021562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:33,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:33,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-16 11:25:33,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547915565] [2022-11-16 11:25:33,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:33,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-16 11:25:33,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 11:25:33,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:33,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-16 11:25:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:34,117 INFO L130 PetriNetUnfolder]: 245/636 cut-off events. [2022-11-16 11:25:34,118 INFO L131 PetriNetUnfolder]: For 688/688 co-relation queries the response was YES. [2022-11-16 11:25:34,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 636 events. 245/636 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3220 event pairs, 5 based on Foata normal form. 15/595 useless extension candidates. Maximal degree in co-relation 1522. Up to 125 conditions per place. [2022-11-16 11:25:34,128 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 51 selfloop transitions, 22 changer transitions 1/142 dead transitions. [2022-11-16 11:25:34,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 684 flow [2022-11-16 11:25:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:25:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2022-11-16 11:25:34,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598639455782313 [2022-11-16 11:25:34,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2022-11-16 11:25:34,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2022-11-16 11:25:34,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:34,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2022-11-16 11:25:34,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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 11:25:34,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 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 11:25:34,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 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 11:25:34,137 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 299 flow. Second operand 7 states and 632 transitions. [2022-11-16 11:25:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 684 flow [2022-11-16 11:25:34,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 658 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-16 11:25:34,146 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 504 flow [2022-11-16 11:25:34,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2022-11-16 11:25:34,149 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2022-11-16 11:25:34,149 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 504 flow [2022-11-16 11:25:34,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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 11:25:34,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:34,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:34,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:34,358 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 11:25:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 604665223, now seen corresponding path program 2 times [2022-11-16 11:25:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:34,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541412428] [2022-11-16 11:25:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541412428] [2022-11-16 11:25:34,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541412428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:34,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:34,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:34,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843707429] [2022-11-16 11:25:34,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:25:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:34,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:25:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:34,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-16 11:25:34,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 11:25:34,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:34,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-16 11:25:34,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:35,028 INFO L130 PetriNetUnfolder]: 417/1075 cut-off events. [2022-11-16 11:25:35,028 INFO L131 PetriNetUnfolder]: For 2573/2577 co-relation queries the response was YES. [2022-11-16 11:25:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1075 events. 417/1075 cut-off events. For 2573/2577 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6550 event pairs, 21 based on Foata normal form. 12/993 useless extension candidates. Maximal degree in co-relation 3284. Up to 176 conditions per place. [2022-11-16 11:25:35,044 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 82 selfloop transitions, 44 changer transitions 0/194 dead transitions. [2022-11-16 11:25:35,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 194 transitions, 1355 flow [2022-11-16 11:25:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2022-11-16 11:25:35,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-11-16 11:25:35,048 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2022-11-16 11:25:35,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2022-11-16 11:25:35,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:35,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2022-11-16 11:25:35,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 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 11:25:35,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:25:35,054 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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 11:25:35,054 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 504 flow. Second operand 9 states and 812 transitions. [2022-11-16 11:25:35,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 194 transitions, 1355 flow [2022-11-16 11:25:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 194 transitions, 1355 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:35,072 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 960 flow [2022-11-16 11:25:35,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=960, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2022-11-16 11:25:35,073 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 36 predicate places. [2022-11-16 11:25:35,073 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 960 flow [2022-11-16 11:25:35,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 11:25:35,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:35,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:25:35,074 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 11:25:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1990119019, now seen corresponding path program 3 times [2022-11-16 11:25:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498908747] [2022-11-16 11:25:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:35,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498908747] [2022-11-16 11:25:35,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498908747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:35,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:35,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378385528] [2022-11-16 11:25:35,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:25:35,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:35,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:25:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:35,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-16 11:25:35,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 960 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 11:25:35,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:35,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-16 11:25:35,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:35,568 INFO L130 PetriNetUnfolder]: 315/1000 cut-off events. [2022-11-16 11:25:35,569 INFO L131 PetriNetUnfolder]: For 4099/4471 co-relation queries the response was YES. [2022-11-16 11:25:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 1000 events. 315/1000 cut-off events. For 4099/4471 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6845 event pairs, 33 based on Foata normal form. 33/938 useless extension candidates. Maximal degree in co-relation 3368. Up to 174 conditions per place. [2022-11-16 11:25:35,588 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 20 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-16 11:25:35,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 148 transitions, 1029 flow [2022-11-16 11:25:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-16 11:25:35,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2022-11-16 11:25:35,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-16 11:25:35,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-16 11:25:35,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:35,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-16 11:25:35,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 11:25:35,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 11:25:35,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 11:25:35,596 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 960 flow. Second operand 5 states and 440 transitions. [2022-11-16 11:25:35,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 148 transitions, 1029 flow [2022-11-16 11:25:35,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 148 transitions, 1021 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:35,617 INFO L231 Difference]: Finished difference. Result has 136 places, 143 transitions, 978 flow [2022-11-16 11:25:35,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=978, PETRI_PLACES=136, PETRI_TRANSITIONS=143} [2022-11-16 11:25:35,620 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2022-11-16 11:25:35,620 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 143 transitions, 978 flow [2022-11-16 11:25:35,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 11:25:35,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:35,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:35,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:25:35,622 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 11:25:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1662102511, now seen corresponding path program 1 times [2022-11-16 11:25:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88181790] [2022-11-16 11:25:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88181790] [2022-11-16 11:25:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88181790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154497350] [2022-11-16 11:25:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:35,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:35,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:25:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:36,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:25:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:36,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:36,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154497350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:36,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:36,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-16 11:25:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736305726] [2022-11-16 11:25:36,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:36,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-16 11:25:36,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 143 transitions, 978 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 11:25:36,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:36,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-16 11:25:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:36,812 INFO L130 PetriNetUnfolder]: 749/1939 cut-off events. [2022-11-16 11:25:36,813 INFO L131 PetriNetUnfolder]: For 9574/9601 co-relation queries the response was YES. [2022-11-16 11:25:36,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1939 events. 749/1939 cut-off events. For 9574/9601 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14177 event pairs, 43 based on Foata normal form. 36/1901 useless extension candidates. Maximal degree in co-relation 7534. Up to 470 conditions per place. [2022-11-16 11:25:36,846 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 86 selfloop transitions, 44 changer transitions 0/214 dead transitions. [2022-11-16 11:25:36,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 214 transitions, 1931 flow [2022-11-16 11:25:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:25:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:25:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2022-11-16 11:25:36,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-11-16 11:25:36,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2022-11-16 11:25:36,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2022-11-16 11:25:36,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:36,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2022-11-16 11:25:36,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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 11:25:36,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:36,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:36,856 INFO L175 Difference]: Start difference. First operand has 136 places, 143 transitions, 978 flow. Second operand 6 states and 548 transitions. [2022-11-16 11:25:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 214 transitions, 1931 flow [2022-11-16 11:25:36,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 214 transitions, 1925 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 11:25:36,905 INFO L231 Difference]: Finished difference. Result has 143 places, 170 transitions, 1502 flow [2022-11-16 11:25:36,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1502, PETRI_PLACES=143, PETRI_TRANSITIONS=170} [2022-11-16 11:25:36,906 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 49 predicate places. [2022-11-16 11:25:36,907 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 170 transitions, 1502 flow [2022-11-16 11:25:36,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 11:25:36,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:36,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:36,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:25:37,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 11:25:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2099072245, now seen corresponding path program 2 times [2022-11-16 11:25:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146280757] [2022-11-16 11:25:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:37,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146280757] [2022-11-16 11:25:37,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146280757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:37,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:37,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260637633] [2022-11-16 11:25:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:25:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:25:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:25:37,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 105 [2022-11-16 11:25:37,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 170 transitions, 1502 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 11:25:37,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:37,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 105 [2022-11-16 11:25:37,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:37,931 INFO L130 PetriNetUnfolder]: 754/2113 cut-off events. [2022-11-16 11:25:37,932 INFO L131 PetriNetUnfolder]: For 9698/9838 co-relation queries the response was YES. [2022-11-16 11:25:37,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7888 conditions, 2113 events. 754/2113 cut-off events. For 9698/9838 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16479 event pairs, 112 based on Foata normal form. 59/2015 useless extension candidates. Maximal degree in co-relation 7857. Up to 407 conditions per place. [2022-11-16 11:25:37,967 INFO L137 encePairwiseOnDemand]: 99/105 looper letters, 22 selfloop transitions, 5 changer transitions 0/179 dead transitions. [2022-11-16 11:25:37,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 179 transitions, 1586 flow [2022-11-16 11:25:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2022-11-16 11:25:37,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-11-16 11:25:37,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2022-11-16 11:25:37,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2022-11-16 11:25:37,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:37,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2022-11-16 11:25:37,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 11:25:37,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 11:25:37,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 11:25:37,974 INFO L175 Difference]: Start difference. First operand has 143 places, 170 transitions, 1502 flow. Second operand 5 states and 441 transitions. [2022-11-16 11:25:37,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 179 transitions, 1586 flow [2022-11-16 11:25:38,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 179 transitions, 1584 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:38,035 INFO L231 Difference]: Finished difference. Result has 149 places, 172 transitions, 1526 flow [2022-11-16 11:25:38,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1526, PETRI_PLACES=149, PETRI_TRANSITIONS=172} [2022-11-16 11:25:38,038 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 55 predicate places. [2022-11-16 11:25:38,038 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 172 transitions, 1526 flow [2022-11-16 11:25:38,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 11:25:38,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:38,039 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:38,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:25:38,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 11:25:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1741929440, now seen corresponding path program 1 times [2022-11-16 11:25:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:38,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033278576] [2022-11-16 11:25:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033278576] [2022-11-16 11:25:38,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033278576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142326199] [2022-11-16 11:25:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:38,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:38,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:38,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:25:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:38,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:25:38,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:38,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:38,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142326199] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:38,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:38,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2022-11-16 11:25:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127626050] [2022-11-16 11:25:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:25:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:25:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:25:38,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-16 11:25:38,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 172 transitions, 1526 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 11:25:38,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:38,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-16 11:25:38,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:39,536 INFO L130 PetriNetUnfolder]: 1108/2930 cut-off events. [2022-11-16 11:25:39,536 INFO L131 PetriNetUnfolder]: For 21039/21078 co-relation queries the response was YES. [2022-11-16 11:25:39,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13191 conditions, 2930 events. 1108/2930 cut-off events. For 21039/21078 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24013 event pairs, 138 based on Foata normal form. 23/2929 useless extension candidates. Maximal degree in co-relation 13158. Up to 1104 conditions per place. [2022-11-16 11:25:39,694 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 87 selfloop transitions, 84 changer transitions 12/255 dead transitions. [2022-11-16 11:25:39,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 255 transitions, 2935 flow [2022-11-16 11:25:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:25:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:25:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2022-11-16 11:25:39,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2022-11-16 11:25:39,698 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2022-11-16 11:25:39,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2022-11-16 11:25:39,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:39,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2022-11-16 11:25:39,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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 11:25:39,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:39,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 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 11:25:39,703 INFO L175 Difference]: Start difference. First operand has 149 places, 172 transitions, 1526 flow. Second operand 6 states and 539 transitions. [2022-11-16 11:25:39,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 255 transitions, 2935 flow [2022-11-16 11:25:39,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 255 transitions, 2931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:25:39,785 INFO L231 Difference]: Finished difference. Result has 156 places, 217 transitions, 2586 flow [2022-11-16 11:25:39,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2586, PETRI_PLACES=156, PETRI_TRANSITIONS=217} [2022-11-16 11:25:39,786 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 62 predicate places. [2022-11-16 11:25:39,787 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 217 transitions, 2586 flow [2022-11-16 11:25:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 11:25:39,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:39,788 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:39,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:25:39,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 11:25:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1348931140, now seen corresponding path program 2 times [2022-11-16 11:25:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:39,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004705360] [2022-11-16 11:25:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004705360] [2022-11-16 11:25:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004705360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509333166] [2022-11-16 11:25:40,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:40,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:40,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:40,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:40,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:25:40,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:40,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:25:40,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:40,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:40,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509333166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:40,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:40,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-11-16 11:25:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819027130] [2022-11-16 11:25:40,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:40,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:25:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:25:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:25:40,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:25:40,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 217 transitions, 2586 flow. Second operand has 14 states, 14 states have (on average 77.78571428571429) internal successors, (1089), 14 states have internal predecessors, (1089), 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 11:25:40,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:40,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:25:40,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:42,842 INFO L130 PetriNetUnfolder]: 2012/5176 cut-off events. [2022-11-16 11:25:42,843 INFO L131 PetriNetUnfolder]: For 42873/42942 co-relation queries the response was YES. [2022-11-16 11:25:42,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24817 conditions, 5176 events. 2012/5176 cut-off events. For 42873/42942 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 48297 event pairs, 93 based on Foata normal form. 89/5238 useless extension candidates. Maximal degree in co-relation 24779. Up to 725 conditions per place. [2022-11-16 11:25:42,924 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 120 selfloop transitions, 61 changer transitions 164/468 dead transitions. [2022-11-16 11:25:42,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 468 transitions, 6888 flow [2022-11-16 11:25:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:25:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:25:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1717 transitions. [2022-11-16 11:25:42,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7786848072562358 [2022-11-16 11:25:42,933 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1717 transitions. [2022-11-16 11:25:42,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1717 transitions. [2022-11-16 11:25:42,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:42,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1717 transitions. [2022-11-16 11:25:42,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 81.76190476190476) internal successors, (1717), 21 states have internal predecessors, (1717), 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 11:25:42,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 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 11:25:42,947 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 105.0) internal successors, (2310), 22 states have internal predecessors, (2310), 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 11:25:42,947 INFO L175 Difference]: Start difference. First operand has 156 places, 217 transitions, 2586 flow. Second operand 21 states and 1717 transitions. [2022-11-16 11:25:42,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 468 transitions, 6888 flow [2022-11-16 11:25:43,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 468 transitions, 6814 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:43,104 INFO L231 Difference]: Finished difference. Result has 187 places, 249 transitions, 3150 flow [2022-11-16 11:25:43,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3150, PETRI_PLACES=187, PETRI_TRANSITIONS=249} [2022-11-16 11:25:43,106 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 93 predicate places. [2022-11-16 11:25:43,106 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 249 transitions, 3150 flow [2022-11-16 11:25:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 77.78571428571429) internal successors, (1089), 14 states have internal predecessors, (1089), 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 11:25:43,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:43,107 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:43,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:43,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 11:25:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -824840184, now seen corresponding path program 1 times [2022-11-16 11:25:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051820349] [2022-11-16 11:25:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:43,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051820349] [2022-11-16 11:25:43,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051820349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:43,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:43,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:25:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986953181] [2022-11-16 11:25:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:43,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:43,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:25:43,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 249 transitions, 3150 flow. Second operand has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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 11:25:43,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:43,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:25:43,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:45,011 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([264] L71-->L78: Formula: (= v_~pos~0_5 (+ v_~pos~0_6 2)) InVars {~pos~0=v_~pos~0_6} OutVars{~pos~0=v_~pos~0_5} AuxVars[] AssignedVars[~pos~0][127], [1166#(<= (+ (* (div ~d2~0 256) 256) 1) ~d2~0), Black: 690#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 686#true, Black: 688#(= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1), Black: 177#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 131#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 648#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 179#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 175#true, Black: 644#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1509#(or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 676#true, Black: 1674#(and (or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)) (or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 1172#true, Black: 1513#(or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)), Black: 1162#true, Black: 146#(<= (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) 1) thread1Thread1of1ForFork1_~lv_assert~0), Black: 140#true, Black: 666#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 662#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 658#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 659#(<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 668#(and (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 1177#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 2201#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= 0 ~pos~0)), Black: 2199#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2193#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2211#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 ~pos~0) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), Black: 164#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), 664#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 166#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= (div thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= 0 ~pos~0)), Black: 2203#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), Black: 680#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), Black: 1687#(<= 1 ~pos~0), Black: 2191#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))), 646#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 2197#(and (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 158#(<= 0 ~pos~0), 150#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1686#(<= 0 ~pos~0), Black: 2209#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), 123#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 111#true, 24#L110-4true, 44#L54true, 50#L78true, 2226#true, 2195#(and (<= 1 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), 1155#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 118#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0))]) [2022-11-16 11:25:45,011 INFO L383 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-11-16 11:25:45,012 INFO L386 tUnfolder$Statistics]: existing Event has 57 ancestors and is cut-off event [2022-11-16 11:25:45,012 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-16 11:25:45,012 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-16 11:25:45,585 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([264] L71-->L78: Formula: (= v_~pos~0_5 (+ v_~pos~0_6 2)) InVars {~pos~0=v_~pos~0_6} OutVars{~pos~0=v_~pos~0_5} AuxVars[] AssignedVars[~pos~0][127], [1166#(<= (+ (* (div ~d2~0 256) 256) 1) ~d2~0), Black: 690#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 686#true, Black: 688#(= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1), Black: 177#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 131#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 648#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 179#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 175#true, Black: 644#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1509#(or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 676#true, Black: 1674#(and (or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)) (or (= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 1172#true, Black: 1513#(or (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (= (mod ~v_assert~0 256) 0)), Black: 1162#true, Black: 146#(<= (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) 1) thread1Thread1of1ForFork1_~lv_assert~0), Black: 140#true, Black: 666#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 662#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1))), Black: 658#(= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0), Black: 659#(<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 668#(and (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), 1177#(<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1), Black: 2201#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= 0 ~pos~0)), Black: 2199#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2193#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 2211#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 ~pos~0) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), Black: 164#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), 664#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ thread1Thread1of1ForFork1_~lv_assert~0 (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256))) (+ (* 256 (div thread1Thread1of1ForFork1_~lv_assert~0 256)) thread2Thread1of1ForFork2_~lv_assert~1)) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1)), Black: 166#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0) (<= (div thread1Thread1of1ForFork1_~lv_assert~0 256) 0) (<= 0 ~pos~0)), Black: 2203#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), Black: 680#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), Black: 1687#(<= 1 ~pos~0), Black: 2191#(and (= ~pos~0 0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))), 646#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= (+ (* 256 (div thread2Thread1of1ForFork2_~lv_assert~1 256)) 1) thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 2197#(and (<= 0 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), Black: 158#(<= 0 ~pos~0), 150#(and (= thread1Thread1of1ForFork1_~lv_assert~0 ~v_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 1686#(<= 0 ~pos~0), Black: 2209#(and (<= thread1Thread1of1ForFork1_~lv_assert~0 1) (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 1 thread1Thread1of1ForFork1_~lv_assert~0)), 4#L111-4true, 74#thread3ENTRYtrue, 123#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 111#true, 44#L54true, 50#L78true, 2226#true, 2195#(and (<= 1 ~pos~0) (not (<= (mod thread1Thread1of1ForFork1_~lv_assert~0 256) 0))), 1155#(and (= ~v_assert~0 thread2Thread1of1ForFork2_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), Black: 118#(and (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0))]) [2022-11-16 11:25:45,598 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2022-11-16 11:25:45,598 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-11-16 11:25:45,599 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2022-11-16 11:25:45,599 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-16 11:25:45,801 INFO L130 PetriNetUnfolder]: 2690/6616 cut-off events. [2022-11-16 11:25:45,801 INFO L131 PetriNetUnfolder]: For 78451/78568 co-relation queries the response was YES. [2022-11-16 11:25:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38407 conditions, 6616 events. 2690/6616 cut-off events. For 78451/78568 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62512 event pairs, 287 based on Foata normal form. 104/6687 useless extension candidates. Maximal degree in co-relation 38357. Up to 1731 conditions per place. [2022-11-16 11:25:45,913 INFO L137 encePairwiseOnDemand]: 93/105 looper letters, 185 selfloop transitions, 50 changer transitions 104/462 dead transitions. [2022-11-16 11:25:45,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 462 transitions, 7220 flow [2022-11-16 11:25:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:25:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:25:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 995 transitions. [2022-11-16 11:25:45,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7896825396825397 [2022-11-16 11:25:45,918 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 995 transitions. [2022-11-16 11:25:45,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 995 transitions. [2022-11-16 11:25:45,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:45,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 995 transitions. [2022-11-16 11:25:45,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.91666666666667) internal successors, (995), 12 states have internal predecessors, (995), 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 11:25:45,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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 11:25:45,928 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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 11:25:45,928 INFO L175 Difference]: Start difference. First operand has 187 places, 249 transitions, 3150 flow. Second operand 12 states and 995 transitions. [2022-11-16 11:25:45,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 462 transitions, 7220 flow [2022-11-16 11:25:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 462 transitions, 6840 flow, removed 187 selfloop flow, removed 7 redundant places. [2022-11-16 11:25:46,241 INFO L231 Difference]: Finished difference. Result has 190 places, 288 transitions, 3962 flow [2022-11-16 11:25:46,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3962, PETRI_PLACES=190, PETRI_TRANSITIONS=288} [2022-11-16 11:25:46,244 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 96 predicate places. [2022-11-16 11:25:46,244 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 288 transitions, 3962 flow [2022-11-16 11:25:46,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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 11:25:46,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:46,245 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:46,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:25:46,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 11:25:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 632116997, now seen corresponding path program 3 times [2022-11-16 11:25:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508409992] [2022-11-16 11:25:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:25:46,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508409992] [2022-11-16 11:25:46,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508409992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:46,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:46,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:25:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133918218] [2022-11-16 11:25:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:46,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-16 11:25:46,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 288 transitions, 3962 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 11:25:46,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:46,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-16 11:25:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:48,267 INFO L130 PetriNetUnfolder]: 2068/6291 cut-off events. [2022-11-16 11:25:48,267 INFO L131 PetriNetUnfolder]: For 74272/74755 co-relation queries the response was YES. [2022-11-16 11:25:48,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34417 conditions, 6291 events. 2068/6291 cut-off events. For 74272/74755 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 63984 event pairs, 273 based on Foata normal form. 315/6490 useless extension candidates. Maximal degree in co-relation 34362. Up to 928 conditions per place. [2022-11-16 11:25:48,345 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 36 selfloop transitions, 5 changer transitions 0/277 dead transitions. [2022-11-16 11:25:48,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 277 transitions, 3605 flow [2022-11-16 11:25:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:25:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:25:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-11-16 11:25:48,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023809523809524 [2022-11-16 11:25:48,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-11-16 11:25:48,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-11-16 11:25:48,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:48,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-11-16 11:25:48,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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 11:25:48,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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 11:25:48,351 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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 11:25:48,351 INFO L175 Difference]: Start difference. First operand has 190 places, 288 transitions, 3962 flow. Second operand 4 states and 379 transitions. [2022-11-16 11:25:48,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 277 transitions, 3605 flow [2022-11-16 11:25:48,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 277 transitions, 3406 flow, removed 79 selfloop flow, removed 10 redundant places. [2022-11-16 11:25:48,719 INFO L231 Difference]: Finished difference. Result has 183 places, 265 transitions, 3308 flow [2022-11-16 11:25:48,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3308, PETRI_PLACES=183, PETRI_TRANSITIONS=265} [2022-11-16 11:25:48,720 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 89 predicate places. [2022-11-16 11:25:48,720 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 265 transitions, 3308 flow [2022-11-16 11:25:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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 11:25:48,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:48,723 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:25:48,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 11:25:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2019362171, now seen corresponding path program 2 times [2022-11-16 11:25:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843461480] [2022-11-16 11:25:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:25:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:49,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843461480] [2022-11-16 11:25:49,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843461480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:49,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:49,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:25:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134647964] [2022-11-16 11:25:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:49,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:49,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:49,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-16 11:25:49,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 265 transitions, 3308 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 11:25:49,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:49,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-16 11:25:49,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:50,673 INFO L130 PetriNetUnfolder]: 2155/6423 cut-off events. [2022-11-16 11:25:50,673 INFO L131 PetriNetUnfolder]: For 67333/67627 co-relation queries the response was YES. [2022-11-16 11:25:50,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35048 conditions, 6423 events. 2155/6423 cut-off events. For 67333/67627 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 61700 event pairs, 370 based on Foata normal form. 227/6460 useless extension candidates. Maximal degree in co-relation 34996. Up to 959 conditions per place. [2022-11-16 11:25:50,743 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 41 selfloop transitions, 5 changer transitions 3/264 dead transitions. [2022-11-16 11:25:50,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 264 transitions, 3158 flow [2022-11-16 11:25:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:25:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:25:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-16 11:25:50,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8976190476190476 [2022-11-16 11:25:50,746 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-16 11:25:50,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-16 11:25:50,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:50,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-16 11:25:50,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 11:25:50,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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 11:25:50,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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 11:25:50,753 INFO L175 Difference]: Start difference. First operand has 183 places, 265 transitions, 3308 flow. Second operand 4 states and 377 transitions. [2022-11-16 11:25:50,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 264 transitions, 3158 flow [2022-11-16 11:25:51,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 264 transitions, 3136 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:51,032 INFO L231 Difference]: Finished difference. Result has 186 places, 244 transitions, 2923 flow [2022-11-16 11:25:51,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2923, PETRI_PLACES=186, PETRI_TRANSITIONS=244} [2022-11-16 11:25:51,034 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 92 predicate places. [2022-11-16 11:25:51,034 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 244 transitions, 2923 flow [2022-11-16 11:25:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 11:25:51,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:51,036 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:25:51,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 11:25:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1981305758, now seen corresponding path program 1 times [2022-11-16 11:25:51,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:51,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191529592] [2022-11-16 11:25:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191529592] [2022-11-16 11:25:51,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191529592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536626119] [2022-11-16 11:25:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:51,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:51,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:51,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:25:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:51,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:25:51,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:51,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:52,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536626119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:52,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:52,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-11-16 11:25:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367049853] [2022-11-16 11:25:52,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:52,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:25:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:52,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:25:52,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:25:52,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:25:52,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 244 transitions, 2923 flow. Second operand has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 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 11:25:52,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:52,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:25:52,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:55,748 INFO L130 PetriNetUnfolder]: 3882/10409 cut-off events. [2022-11-16 11:25:55,748 INFO L131 PetriNetUnfolder]: For 133250/133478 co-relation queries the response was YES. [2022-11-16 11:25:55,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63717 conditions, 10409 events. 3882/10409 cut-off events. For 133250/133478 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 106948 event pairs, 174 based on Foata normal form. 200/10567 useless extension candidates. Maximal degree in co-relation 63664. Up to 1751 conditions per place. [2022-11-16 11:25:55,874 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 103 selfloop transitions, 172 changer transitions 180/555 dead transitions. [2022-11-16 11:25:55,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 555 transitions, 9213 flow [2022-11-16 11:25:55,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:25:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 11:25:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2110 transitions. [2022-11-16 11:25:55,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7728937728937729 [2022-11-16 11:25:55,883 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2110 transitions. [2022-11-16 11:25:55,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2110 transitions. [2022-11-16 11:25:55,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:55,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2110 transitions. [2022-11-16 11:25:55,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 81.15384615384616) internal successors, (2110), 26 states have internal predecessors, (2110), 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 11:25:55,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 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 11:25:55,901 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 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 11:25:55,903 INFO L175 Difference]: Start difference. First operand has 186 places, 244 transitions, 2923 flow. Second operand 26 states and 2110 transitions. [2022-11-16 11:25:55,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 555 transitions, 9213 flow [2022-11-16 11:25:56,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 555 transitions, 9213 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:56,391 INFO L231 Difference]: Finished difference. Result has 225 places, 315 transitions, 4725 flow [2022-11-16 11:25:56,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4725, PETRI_PLACES=225, PETRI_TRANSITIONS=315} [2022-11-16 11:25:56,393 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 131 predicate places. [2022-11-16 11:25:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 315 transitions, 4725 flow [2022-11-16 11:25:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 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 11:25:56,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:56,394 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:56,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:56,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 11:25:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 778447022, now seen corresponding path program 2 times [2022-11-16 11:25:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149871862] [2022-11-16 11:25:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149871862] [2022-11-16 11:25:57,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149871862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951787124] [2022-11-16 11:25:57,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:57,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:57,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:57,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:57,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:25:57,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:57,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:25:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:57,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:57,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951787124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:57,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:57,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-11-16 11:25:57,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94282374] [2022-11-16 11:25:57,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:57,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:25:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:25:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:25:57,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:25:57,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 315 transitions, 4725 flow. Second operand has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 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 11:25:57,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:57,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:25:57,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:02,744 INFO L130 PetriNetUnfolder]: 5734/14834 cut-off events. [2022-11-16 11:26:02,745 INFO L131 PetriNetUnfolder]: For 261420/261893 co-relation queries the response was YES. [2022-11-16 11:26:02,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104158 conditions, 14834 events. 5734/14834 cut-off events. For 261420/261893 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 163721 event pairs, 453 based on Foata normal form. 149/14931 useless extension candidates. Maximal degree in co-relation 104090. Up to 2724 conditions per place. [2022-11-16 11:26:02,951 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 154 selfloop transitions, 281 changer transitions 163/698 dead transitions. [2022-11-16 11:26:02,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 698 transitions, 13347 flow [2022-11-16 11:26:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:26:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 11:26:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2106 transitions. [2022-11-16 11:26:02,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2022-11-16 11:26:02,956 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2106 transitions. [2022-11-16 11:26:02,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2106 transitions. [2022-11-16 11:26:02,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:02,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2106 transitions. [2022-11-16 11:26:02,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 81.0) internal successors, (2106), 26 states have internal predecessors, (2106), 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 11:26:02,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 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 11:26:02,987 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 105.0) internal successors, (2835), 27 states have internal predecessors, (2835), 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 11:26:02,987 INFO L175 Difference]: Start difference. First operand has 225 places, 315 transitions, 4725 flow. Second operand 26 states and 2106 transitions. [2022-11-16 11:26:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 698 transitions, 13347 flow [2022-11-16 11:26:04,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 698 transitions, 12098 flow, removed 506 selfloop flow, removed 14 redundant places. [2022-11-16 11:26:04,543 INFO L231 Difference]: Finished difference. Result has 246 places, 473 transitions, 7892 flow [2022-11-16 11:26:04,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7892, PETRI_PLACES=246, PETRI_TRANSITIONS=473} [2022-11-16 11:26:04,544 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 152 predicate places. [2022-11-16 11:26:04,544 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 473 transitions, 7892 flow [2022-11-16 11:26:04,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.93333333333334) internal successors, (1169), 15 states have internal predecessors, (1169), 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 11:26:04,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:04,545 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:04,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:04,746 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 11:26:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2022043096, now seen corresponding path program 3 times [2022-11-16 11:26:04,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:04,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530363353] [2022-11-16 11:26:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:04,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530363353] [2022-11-16 11:26:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530363353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16752717] [2022-11-16 11:26:05,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:26:05,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:05,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:05,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:26:05,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:26:05,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:05,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:26:05,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:05,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:05,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16752717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:05,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:26:05,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2022-11-16 11:26:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932883547] [2022-11-16 11:26:05,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:05,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:26:05,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:26:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:05,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-11-16 11:26:05,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 473 transitions, 7892 flow. Second operand has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 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 11:26:05,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:05,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-11-16 11:26:05,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:11,020 INFO L130 PetriNetUnfolder]: 5684/13771 cut-off events. [2022-11-16 11:26:11,020 INFO L131 PetriNetUnfolder]: For 243893/244439 co-relation queries the response was YES. [2022-11-16 11:26:11,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100279 conditions, 13771 events. 5684/13771 cut-off events. For 243893/244439 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 148790 event pairs, 104 based on Foata normal form. 211/13954 useless extension candidates. Maximal degree in co-relation 100202. Up to 2730 conditions per place. [2022-11-16 11:26:11,159 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 0 selfloop transitions, 0 changer transitions 768/768 dead transitions. [2022-11-16 11:26:11,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 768 transitions, 15443 flow [2022-11-16 11:26:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:26:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-16 11:26:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2171 transitions. [2022-11-16 11:26:11,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7657848324514991 [2022-11-16 11:26:11,165 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2171 transitions. [2022-11-16 11:26:11,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2171 transitions. [2022-11-16 11:26:11,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:11,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2171 transitions. [2022-11-16 11:26:11,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 80.4074074074074) internal successors, (2171), 27 states have internal predecessors, (2171), 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 11:26:11,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 105.0) internal successors, (2940), 28 states have internal predecessors, (2940), 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 11:26:11,176 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 105.0) internal successors, (2940), 28 states have internal predecessors, (2940), 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 11:26:11,177 INFO L175 Difference]: Start difference. First operand has 246 places, 473 transitions, 7892 flow. Second operand 27 states and 2171 transitions. [2022-11-16 11:26:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 768 transitions, 15443 flow [2022-11-16 11:26:13,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 768 transitions, 14667 flow, removed 295 selfloop flow, removed 16 redundant places. [2022-11-16 11:26:13,632 INFO L231 Difference]: Finished difference. Result has 235 places, 0 transitions, 0 flow [2022-11-16 11:26:13,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=7384, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=235, PETRI_TRANSITIONS=0} [2022-11-16 11:26:13,633 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 141 predicate places. [2022-11-16 11:26:13,633 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 0 transitions, 0 flow [2022-11-16 11:26:13,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 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 11:26:13,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 11:26:13,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 11:26:13,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 11:26:13,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 11:26:13,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:13,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:26:13,842 INFO L444 BasicCegarLoop]: Path program histogram: [4, 3, 3, 3, 2, 2, 1] [2022-11-16 11:26:13,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:26:13,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:26:13,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:26:13 BasicIcfg [2022-11-16 11:26:13,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:26:13,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:26:13,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:26:13,855 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:26:13,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:28" (3/4) ... [2022-11-16 11:26:13,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:26:13,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:26:13,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:26:13,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:26:13,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 11:26:13,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:26:13,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:26:13,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:26:13,927 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:26:13,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:26:13,928 INFO L158 Benchmark]: Toolchain (without parser) took 46123.42ms. Allocated memory was 123.7MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 84.5MB in the beginning and 8.8GB in the end (delta: -8.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-16 11:26:13,929 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:26:13,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.24ms. Allocated memory is still 123.7MB. Free memory was 84.3MB in the beginning and 97.6MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:26:13,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.44ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 96.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:13,930 INFO L158 Benchmark]: Boogie Preprocessor took 55.47ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:26:13,930 INFO L158 Benchmark]: RCFGBuilder took 460.09ms. Allocated memory is still 123.7MB. Free memory was 95.0MB in the beginning and 80.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 11:26:13,931 INFO L158 Benchmark]: TraceAbstraction took 44995.81ms. Allocated memory was 123.7MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 79.2MB in the beginning and 8.8GB in the end (delta: -8.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-16 11:26:13,931 INFO L158 Benchmark]: Witness Printer took 72.64ms. Allocated memory is still 10.0GB. Free memory was 8.8GB in the beginning and 8.8GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:26:13,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.24ms. Allocated memory is still 123.7MB. Free memory was 84.3MB in the beginning and 97.6MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.44ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 96.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.47ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 460.09ms. Allocated memory is still 123.7MB. Free memory was 95.0MB in the beginning and 80.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 44995.81ms. Allocated memory was 123.7MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 79.2MB in the beginning and 8.8GB in the end (delta: -8.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 72.64ms. Allocated memory is still 10.0GB. Free memory was 8.8GB in the beginning and 8.8GB 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: 116]: 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, 126 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: 44.7s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1176 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1176 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 552 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2802 IncrementalHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 218 mSDtfsCounter, 2802 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1407 GetRequests, 1186 SyntacticMatches, 24 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7892occurred in iteration=17, InterpolantAutomatonStates: 188, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 2060 NumberOfCodeBlocks, 2060 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2629 ConstructedInterpolants, 0 QuantifiedInterpolants, 7306 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1505 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 106/191 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 11:26:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc2901f-359d-4422-aad6-f081ac360ba5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE