./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:55,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:55,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:25:55,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:55,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:56,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:56,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:56,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:56,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:25:56,018 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:25:56,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:25:56,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:25:56,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:56,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:56,023 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:56,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:56,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:25:56,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:56,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:56,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:56,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:56,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:25:56,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:25:56,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:25:56,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:56,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:25:56,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:56,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:56,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:56,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:25:56,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:25:56,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:56,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:56,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:25:56,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:25:56,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:25:56,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:25:56,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:25:56,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:25:56,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:25:56,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:25:56,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:25:56,045 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2023-11-21 22:25:56,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:56,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:56,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:56,394 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:56,394 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:56,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:25:59,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:59,860 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:59,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:25:59,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/data/f83f7cd40/81344ab6a0664599bc0ecc2bd8c7e754/FLAG47f839d60 [2023-11-21 22:25:59,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/data/f83f7cd40/81344ab6a0664599bc0ecc2bd8c7e754 [2023-11-21 22:25:59,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:59,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:59,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:59,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:59,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:59,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:59" (1/1) ... [2023-11-21 22:25:59,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5a126b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:59, skipping insertion in model container [2023-11-21 22:25:59,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:59" (1/1) ... [2023-11-21 22:26:00,015 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:00,193 WARN L240 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_70d65976-913e-4f09-9da5-18a2a76f30c7/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-21 22:26:00,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:00,596 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:00,609 WARN L240 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_70d65976-913e-4f09-9da5-18a2a76f30c7/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-21 22:26:00,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:00,756 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:26:00,757 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:26:00,765 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:00,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00 WrapperNode [2023-11-21 22:26:00,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:00,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:00,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:00,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:00,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,878 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-21 22:26:00,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:00,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:00,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:00,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:00,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,897 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,930 INFO L187 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-21 22:26:00,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:00,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:00,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:00,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:00,960 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (1/1) ... [2023-11-21 22:26:00,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:26:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:01,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:01,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d65976-913e-4f09-9da5-18a2a76f30c7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:26:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:26:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:26:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:26:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:26:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:26:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:26:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:26:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:26:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:26:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:26:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:26:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:26:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:26:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:26:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:26:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:01,094 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:26:01,278 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:01,280 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:26:01,681 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:26:01,950 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:26:01,950 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:26:01,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:01 BoogieIcfgContainer [2023-11-21 22:26:01,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:26:01,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:26:01,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:26:01,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:26:01,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:59" (1/3) ... [2023-11-21 22:26:01,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522ef6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:01, skipping insertion in model container [2023-11-21 22:26:01,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:00" (2/3) ... [2023-11-21 22:26:01,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522ef6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:26:01, skipping insertion in model container [2023-11-21 22:26:01,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:01" (3/3) ... [2023-11-21 22:26:01,962 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:26:01,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:26:01,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:26:01,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:26:01,981 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:26:02,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:26:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-21 22:26:02,122 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-21 22:26:02,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:02,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-21 22:26:02,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-21 22:26:02,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-21 22:26:02,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:26:02,176 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=LoopHeads, 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;@1a7d2200, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:26:02,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:26:02,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:26:02,183 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-21 22:26:02,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:26:02,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:02,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:26:02,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:02,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash 12304696, now seen corresponding path program 1 times [2023-11-21 22:26:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510864289] [2023-11-21 22:26:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:02,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510864289] [2023-11-21 22:26:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510864289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:26:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183075896] [2023-11-21 22:26:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:02,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:26:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:26:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:26:02,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-21 22:26:02,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-21 22:26:02,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:02,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-21 22:26:02,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:03,930 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2023-11-21 22:26:03,931 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-21 22:26:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3958 events. 2495/3958 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24962 event pairs, 1647 based on Foata normal form. 135/4029 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2023-11-21 22:26:03,982 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-21 22:26:03,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-21 22:26:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:26:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:26:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-21 22:26:03,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-21 22:26:03,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-21 22:26:03,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-21 22:26:04,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:04,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-21 22:26:04,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-21 22:26:04,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-21 22:26:04,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-21 22:26:04,013 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-21 22:26:04,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-21 22:26:04,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:26:04,022 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-21 22:26:04,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-21 22:26:04,029 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-21 22:26:04,029 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-21 22:26:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-21 22:26:04,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:04,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:04,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:26:04,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:04,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1608703236, now seen corresponding path program 1 times [2023-11-21 22:26:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321114525] [2023-11-21 22:26:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321114525] [2023-11-21 22:26:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321114525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:26:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324849894] [2023-11-21 22:26:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:26:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:26:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:04,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2023-11-21 22:26:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2023-11-21 22:26:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2023-11-21 22:26:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:14,459 INFO L124 PetriNetUnfolderBase]: 45528/64209 cut-off events. [2023-11-21 22:26:14,460 INFO L125 PetriNetUnfolderBase]: For 2815/2815 co-relation queries the response was YES. [2023-11-21 22:26:14,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128369 conditions, 64209 events. 45528/64209 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 458636 event pairs, 10748 based on Foata normal form. 0/62666 useless extension candidates. Maximal degree in co-relation 128359. Up to 22989 conditions per place. [2023-11-21 22:26:14,891 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 48 selfloop transitions, 9 changer transitions 109/177 dead transitions. [2023-11-21 22:26:14,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 177 transitions, 716 flow [2023-11-21 22:26:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:26:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:26:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2023-11-21 22:26:14,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2023-11-21 22:26:14,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 303 transitions. [2023-11-21 22:26:14,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 303 transitions. [2023-11-21 22:26:14,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:14,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 303 transitions. [2023-11-21 22:26:14,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 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) [2023-11-21 22:26:14,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2023-11-21 22:26:14,919 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2023-11-21 22:26:14,919 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 303 transitions. [2023-11-21 22:26:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 177 transitions, 716 flow [2023-11-21 22:26:14,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:26:14,932 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2023-11-21 22:26:14,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-11-21 22:26:14,934 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-21 22:26:14,934 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2023-11-21 22:26:14,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2023-11-21 22:26:14,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:14,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:14,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:26:14,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:14,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash -999864089, now seen corresponding path program 1 times [2023-11-21 22:26:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589001308] [2023-11-21 22:26:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:15,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589001308] [2023-11-21 22:26:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589001308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:15,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:15,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922638880] [2023-11-21 22:26:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:15,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:15,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2023-11-21 22:26:15,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2023-11-21 22:26:15,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:15,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2023-11-21 22:26:15,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:22,016 INFO L124 PetriNetUnfolderBase]: 32441/47132 cut-off events. [2023-11-21 22:26:22,016 INFO L125 PetriNetUnfolderBase]: For 72938/73011 co-relation queries the response was YES. [2023-11-21 22:26:22,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141864 conditions, 47132 events. 32441/47132 cut-off events. For 72938/73011 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 338230 event pairs, 5535 based on Foata normal form. 1330/48323 useless extension candidates. Maximal degree in co-relation 141846. Up to 15077 conditions per place. [2023-11-21 22:26:22,402 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 64 selfloop transitions, 9 changer transitions 106/190 dead transitions. [2023-11-21 22:26:22,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 190 transitions, 1250 flow [2023-11-21 22:26:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:26:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:26:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2023-11-21 22:26:22,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.622 [2023-11-21 22:26:22,407 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 311 transitions. [2023-11-21 22:26:22,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 311 transitions. [2023-11-21 22:26:22,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:22,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 311 transitions. [2023-11-21 22:26:22,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 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) [2023-11-21 22:26:22,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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) [2023-11-21 22:26:22,414 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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) [2023-11-21 22:26:22,414 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 311 transitions. [2023-11-21 22:26:22,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 190 transitions, 1250 flow [2023-11-21 22:26:23,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 190 transitions, 1092 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-11-21 22:26:23,486 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 284 flow [2023-11-21 22:26:23,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=284, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-11-21 22:26:23,488 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-21 22:26:23,488 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 284 flow [2023-11-21 22:26:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2023-11-21 22:26:23,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:23,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:26:23,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:23,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -552843355, now seen corresponding path program 1 times [2023-11-21 22:26:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:23,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199562456] [2023-11-21 22:26:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:23,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199562456] [2023-11-21 22:26:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199562456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:26:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947103542] [2023-11-21 22:26:23,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:23,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:26:23,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:23,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:26:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:23,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-21 22:26:23,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-11-21 22:26:23,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:23,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-21 22:26:23,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:28,168 INFO L124 PetriNetUnfolderBase]: 18566/29313 cut-off events. [2023-11-21 22:26:28,169 INFO L125 PetriNetUnfolderBase]: For 58240/61047 co-relation queries the response was YES. [2023-11-21 22:26:28,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84878 conditions, 29313 events. 18566/29313 cut-off events. For 58240/61047 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 238061 event pairs, 4744 based on Foata normal form. 1279/28822 useless extension candidates. Maximal degree in co-relation 84853. Up to 15254 conditions per place. [2023-11-21 22:26:28,458 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 40 selfloop transitions, 4 changer transitions 47/118 dead transitions. [2023-11-21 22:26:28,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 704 flow [2023-11-21 22:26:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:26:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:26:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2023-11-21 22:26:28,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-21 22:26:28,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 230 transitions. [2023-11-21 22:26:28,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 230 transitions. [2023-11-21 22:26:28,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:28,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 230 transitions. [2023-11-21 22:26:28,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 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) [2023-11-21 22:26:28,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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) [2023-11-21 22:26:28,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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) [2023-11-21 22:26:28,466 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 284 flow. Second operand 7 states and 230 transitions. [2023-11-21 22:26:28,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 704 flow [2023-11-21 22:26:29,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 673 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-21 22:26:29,546 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 287 flow [2023-11-21 22:26:29,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2023-11-21 22:26:29,548 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-11-21 22:26:29,548 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 287 flow [2023-11-21 22:26:29,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2023-11-21 22:26:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:29,549 INFO L208 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] [2023-11-21 22:26:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:26:29,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash 269311089, now seen corresponding path program 1 times [2023-11-21 22:26:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88790177] [2023-11-21 22:26:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:29,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88790177] [2023-11-21 22:26:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88790177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:26:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789424938] [2023-11-21 22:26:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:29,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:26:29,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:26:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:26:29,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-21 22:26:29,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-11-21 22:26:29,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:29,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-21 22:26:29,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:36,294 INFO L124 PetriNetUnfolderBase]: 32890/49607 cut-off events. [2023-11-21 22:26:36,294 INFO L125 PetriNetUnfolderBase]: For 38006/47211 co-relation queries the response was YES. [2023-11-21 22:26:36,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120260 conditions, 49607 events. 32890/49607 cut-off events. For 38006/47211 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 381580 event pairs, 5562 based on Foata normal form. 2210/49975 useless extension candidates. Maximal degree in co-relation 120231. Up to 24777 conditions per place. [2023-11-21 22:26:36,809 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-21 22:26:36,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 89 transitions, 509 flow [2023-11-21 22:26:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:26:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:26:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-21 22:26:36,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-21 22:26:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-21 22:26:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-21 22:26:36,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:36,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-21 22:26:36,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-21 22:26:36,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2023-11-21 22:26:36,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2023-11-21 22:26:36,814 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 287 flow. Second operand 4 states and 141 transitions. [2023-11-21 22:26:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 89 transitions, 509 flow [2023-11-21 22:26:37,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 477 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-21 22:26:37,002 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 301 flow [2023-11-21 22:26:37,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-11-21 22:26:37,003 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-21 22:26:37,004 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 301 flow [2023-11-21 22:26:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-11-21 22:26:37,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:37,004 INFO L208 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] [2023-11-21 22:26:37,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:26:37,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:37,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:37,006 INFO L85 PathProgramCache]: Analyzing trace with hash 549138632, now seen corresponding path program 1 times [2023-11-21 22:26:37,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:37,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150123653] [2023-11-21 22:26:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:37,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:37,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150123653] [2023-11-21 22:26:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150123653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:37,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:26:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715125012] [2023-11-21 22:26:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:26:37,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:26:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:26:37,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-21 22:26:37,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2023-11-21 22:26:37,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:37,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-21 22:26:37,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:42,591 INFO L124 PetriNetUnfolderBase]: 27027/41048 cut-off events. [2023-11-21 22:26:42,591 INFO L125 PetriNetUnfolderBase]: For 27220/34013 co-relation queries the response was YES. [2023-11-21 22:26:42,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108954 conditions, 41048 events. 27027/41048 cut-off events. For 27220/34013 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 308124 event pairs, 3487 based on Foata normal form. 1854/41434 useless extension candidates. Maximal degree in co-relation 108931. Up to 13880 conditions per place. [2023-11-21 22:26:42,905 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-21 22:26:42,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 632 flow [2023-11-21 22:26:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:26:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:26:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-21 22:26:42,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-21 22:26:42,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-21 22:26:42,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-21 22:26:42,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:42,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-21 22:26:42,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2023-11-21 22:26:42,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2023-11-21 22:26:42,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2023-11-21 22:26:42,911 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 301 flow. Second operand 5 states and 181 transitions. [2023-11-21 22:26:42,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 632 flow [2023-11-21 22:26:42,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:26:42,931 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 366 flow [2023-11-21 22:26:42,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-11-21 22:26:42,932 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-11-21 22:26:42,933 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 366 flow [2023-11-21 22:26:42,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2023-11-21 22:26:42,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:42,933 INFO L208 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] [2023-11-21 22:26:42,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:26:42,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:42,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1951717030, now seen corresponding path program 1 times [2023-11-21 22:26:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:42,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267541893] [2023-11-21 22:26:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267541893] [2023-11-21 22:26:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267541893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:43,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705040346] [2023-11-21 22:26:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:26:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:43,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-21 22:26:43,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-21 22:26:43,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:26:43,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-21 22:26:43,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:26:47,798 INFO L124 PetriNetUnfolderBase]: 22191/33368 cut-off events. [2023-11-21 22:26:47,798 INFO L125 PetriNetUnfolderBase]: For 44666/49756 co-relation queries the response was YES. [2023-11-21 22:26:48,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99361 conditions, 33368 events. 22191/33368 cut-off events. For 44666/49756 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 241608 event pairs, 2821 based on Foata normal form. 1012/33029 useless extension candidates. Maximal degree in co-relation 99335. Up to 11512 conditions per place. [2023-11-21 22:26:48,288 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 88 selfloop transitions, 14 changer transitions 0/129 dead transitions. [2023-11-21 22:26:48,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 129 transitions, 795 flow [2023-11-21 22:26:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:26:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-21 22:26:48,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-21 22:26:48,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-21 22:26:48,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-21 22:26:48,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:26:48,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-21 22:26:48,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2023-11-21 22:26:48,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-21 22:26:48,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-21 22:26:48,293 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 366 flow. Second operand 6 states and 219 transitions. [2023-11-21 22:26:48,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 129 transitions, 795 flow [2023-11-21 22:26:48,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 775 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-21 22:26:48,339 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 432 flow [2023-11-21 22:26:48,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-21 22:26:48,341 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2023-11-21 22:26:48,341 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 432 flow [2023-11-21 22:26:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-21 22:26:48,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:26:48,341 INFO L208 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] [2023-11-21 22:26:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:26:48,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:26:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1365290556, now seen corresponding path program 1 times [2023-11-21 22:26:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642054377] [2023-11-21 22:26:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat