./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme --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 a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:11,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:11,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:57:11,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:11,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:12,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:12,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:12,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:12,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:12,033 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:12,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:12,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:12,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:12,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:12,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:12,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:12,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:12,039 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:12,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:12,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:12,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:12,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:12,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:12,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:12,043 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:12,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:12,044 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:12,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:12,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:12,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:12,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:12,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:12,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:12,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:12,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:12,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:12,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:12,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:12,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:12,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:12,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:12,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:12,051 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_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 [2023-11-26 11:57:12,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:12,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:12,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:12,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:12,368 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:12,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 11:57:15,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:15,826 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:15,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 11:57:15,845 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/data/e75eddd2a/9a9bd691fab2418e9536c0188bd4337c/FLAGf0549bd66 [2023-11-26 11:57:15,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/data/e75eddd2a/9a9bd691fab2418e9536c0188bd4337c [2023-11-26 11:57:15,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:15,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:15,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:15,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:15,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:15,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:15" (1/1) ... [2023-11-26 11:57:15,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b80c60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:15" (1/1) ... [2023-11-26 11:57:15,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:16,121 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_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-26 11:57:16,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:16,505 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:16,521 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_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-26 11:57:16,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:16,634 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:57:16,635 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:57:16,644 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:16,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16 WrapperNode [2023-11-26 11:57:16,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:16,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:16,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:16,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:16,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,746 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-26 11:57:16,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:16,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:16,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:16,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:16,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,768 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,814 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 11:57:16,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:16,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:16,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:16,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:16,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (1/1) ... [2023-11-26 11:57:16,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:16,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:16,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d5d7af1-dab8-4443-824f-5cf01bdfcac2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:57:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:57:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:57:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:57:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:57:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:57:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:57:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:57:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:57:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:57:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:57:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:57:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:57:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:57:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:57:16,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:57:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:57:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:57:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:57:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:57:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:57:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:16,987 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:57:17,298 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:17,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:17,734 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:18,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:18,078 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:57:18,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:18 BoogieIcfgContainer [2023-11-26 11:57:18,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:18,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:18,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:18,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:15" (1/3) ... [2023-11-26 11:57:18,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c578131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:18, skipping insertion in model container [2023-11-26 11:57:18,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:16" (2/3) ... [2023-11-26 11:57:18,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c578131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:18, skipping insertion in model container [2023-11-26 11:57:18,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:18" (3/3) ... [2023-11-26 11:57:18,092 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-26 11:57:18,103 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:57:18,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:18,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:57:18,114 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:57:18,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:57:18,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 11:57:18,273 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 11:57:18,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:57:18,278 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 102 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. [2023-11-26 11:57:18,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 11:57:18,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 11:57:18,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:18,315 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;@3dc12d20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:18,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 11:57:18,321 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:57:18,321 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 11:57:18,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:57:18,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:18,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:57:18,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 11:57:18,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash 12425846, now seen corresponding path program 1 times [2023-11-26 11:57:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291548187] [2023-11-26 11:57:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291548187] [2023-11-26 11:57:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291548187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:57:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138683354] [2023-11-26 11:57:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-26 11:57:18,921 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) [2023-11-26 11:57:18,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:18,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-26 11:57:18,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:19,947 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2023-11-26 11:57:19,947 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 11:57:19,963 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 250. Compared 25137 event pairs, 1647 based on Foata normal form. 135/4025 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2023-11-26 11:57:19,991 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 11:57:19,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-26 11:57:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-26 11:57:20,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-26 11:57:20,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-26 11:57:20,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-26 11:57:20,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:20,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-26 11:57:20,020 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) [2023-11-26 11:57:20,026 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) [2023-11-26 11:57:20,026 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) [2023-11-26 11:57:20,028 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-26 11:57:20,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-26 11:57:20,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:20,042 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 11:57:20,044 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} [2023-11-26 11:57:20,048 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 11:57:20,048 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 11:57:20,049 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) [2023-11-26 11:57:20,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:20,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:57:20,050 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)] === [2023-11-26 11:57:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1774500198, now seen corresponding path program 1 times [2023-11-26 11:57:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887845533] [2023-11-26 11:57:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887845533] [2023-11-26 11:57:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887845533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:20,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480774267] [2023-11-26 11:57:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:20,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:20,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-26 11:57:20,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-26 11:57:20,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:20,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-26 11:57:20,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:28,309 INFO L124 PetriNetUnfolderBase]: 32013/45599 cut-off events. [2023-11-26 11:57:28,310 INFO L125 PetriNetUnfolderBase]: For 1378/1378 co-relation queries the response was YES. [2023-11-26 11:57:28,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90460 conditions, 45599 events. 32013/45599 cut-off events. For 1378/1378 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 323884 event pairs, 8875 based on Foata normal form. 0/44483 useless extension candidates. Maximal degree in co-relation 90450. Up to 19856 conditions per place. [2023-11-26 11:57:28,691 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 47 selfloop transitions, 8 changer transitions 101/168 dead transitions. [2023-11-26 11:57:28,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 168 transitions, 676 flow [2023-11-26 11:57:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:57:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:57:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2023-11-26 11:57:28,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711111111111111 [2023-11-26 11:57:28,698 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2023-11-26 11:57:28,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2023-11-26 11:57:28,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:28,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2023-11-26 11:57:28,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 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) [2023-11-26 11:57:28,706 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) [2023-11-26 11:57:28,707 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) [2023-11-26 11:57:28,707 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 302 transitions. [2023-11-26 11:57:28,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 168 transitions, 676 flow [2023-11-26 11:57:28,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 168 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:28,714 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2023-11-26 11:57:28,714 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=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-26 11:57:28,716 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 11:57:28,716 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2023-11-26 11:57:28,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-26 11:57:28,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:28,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:57:28,718 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)] === [2023-11-26 11:57:28,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1637851399, now seen corresponding path program 1 times [2023-11-26 11:57:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514548624] [2023-11-26 11:57:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:29,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514548624] [2023-11-26 11:57:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514548624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:29,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:29,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330571358] [2023-11-26 11:57:29,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:29,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:29,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-26 11:57:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2023-11-26 11:57:29,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:29,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-26 11:57:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:34,135 INFO L124 PetriNetUnfolderBase]: 22877/33149 cut-off events. [2023-11-26 11:57:34,135 INFO L125 PetriNetUnfolderBase]: For 43809/44397 co-relation queries the response was YES. [2023-11-26 11:57:34,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99560 conditions, 33149 events. 22877/33149 cut-off events. For 43809/44397 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 232384 event pairs, 4502 based on Foata normal form. 956/34024 useless extension candidates. Maximal degree in co-relation 99542. Up to 13397 conditions per place. [2023-11-26 11:57:34,466 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 67 selfloop transitions, 8 changer transitions 92/179 dead transitions. [2023-11-26 11:57:34,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 179 transitions, 1100 flow [2023-11-26 11:57:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:57:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2023-11-26 11:57:34,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628 [2023-11-26 11:57:34,470 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 314 transitions. [2023-11-26 11:57:34,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 314 transitions. [2023-11-26 11:57:34,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:34,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 314 transitions. [2023-11-26 11:57:34,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 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) [2023-11-26 11:57:34,479 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) [2023-11-26 11:57:34,480 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) [2023-11-26 11:57:34,480 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 314 transitions. [2023-11-26 11:57:34,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 179 transitions, 1100 flow [2023-11-26 11:57:34,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 179 transitions, 962 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:34,938 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 256 flow [2023-11-26 11:57:34,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=256, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-11-26 11:57:34,941 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-26 11:57:34,941 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 256 flow [2023-11-26 11:57:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2023-11-26 11:57:34,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:34,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:57:34,944 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)] === [2023-11-26 11:57:34,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -735231384, now seen corresponding path program 1 times [2023-11-26 11:57:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455490971] [2023-11-26 11:57:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455490971] [2023-11-26 11:57:35,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455490971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:35,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:35,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242403292] [2023-11-26 11:57:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:35,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:35,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-26 11:57:35,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 256 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) [2023-11-26 11:57:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-26 11:57:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:39,297 INFO L124 PetriNetUnfolderBase]: 14629/22788 cut-off events. [2023-11-26 11:57:39,298 INFO L125 PetriNetUnfolderBase]: For 30796/33022 co-relation queries the response was YES. [2023-11-26 11:57:39,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62755 conditions, 22788 events. 14629/22788 cut-off events. For 30796/33022 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 174625 event pairs, 4238 based on Foata normal form. 910/23014 useless extension candidates. Maximal degree in co-relation 62730. Up to 13292 conditions per place. [2023-11-26 11:57:39,529 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 35 selfloop transitions, 4 changer transitions 43/106 dead transitions. [2023-11-26 11:57:39,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 594 flow [2023-11-26 11:57:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:57:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:57:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2023-11-26 11:57:39,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2023-11-26 11:57:39,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 223 transitions. [2023-11-26 11:57:39,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 223 transitions. [2023-11-26 11:57:39,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:39,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 223 transitions. [2023-11-26 11:57:39,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 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) [2023-11-26 11:57:39,535 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) [2023-11-26 11:57:39,535 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) [2023-11-26 11:57:39,535 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 256 flow. Second operand 7 states and 223 transitions. [2023-11-26 11:57:39,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 594 flow [2023-11-26 11:57:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 563 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-26 11:57:40,359 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 259 flow [2023-11-26 11:57:40,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-11-26 11:57:40,361 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-26 11:57:40,361 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 259 flow [2023-11-26 11:57:40,361 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) [2023-11-26 11:57:40,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:40,361 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] [2023-11-26 11:57:40,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:57:40,362 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)] === [2023-11-26 11:57:40,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -960056325, now seen corresponding path program 1 times [2023-11-26 11:57:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:40,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083232329] [2023-11-26 11:57:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:40,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:40,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:40,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083232329] [2023-11-26 11:57:40,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083232329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:40,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:40,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:40,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507539074] [2023-11-26 11:57:40,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:40,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:40,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:40,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:40,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 11:57:40,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 259 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) [2023-11-26 11:57:40,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:40,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 11:57:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:46,085 INFO L124 PetriNetUnfolderBase]: 28258/42490 cut-off events. [2023-11-26 11:57:46,086 INFO L125 PetriNetUnfolderBase]: For 31010/35216 co-relation queries the response was YES. [2023-11-26 11:57:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102868 conditions, 42490 events. 28258/42490 cut-off events. For 31010/35216 co-relation queries the response was YES. Maximal size of possible extension queue 1748. Compared 315635 event pairs, 5123 based on Foata normal form. 1895/42911 useless extension candidates. Maximal degree in co-relation 102841. Up to 20985 conditions per place. [2023-11-26 11:57:46,475 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-26 11:57:46,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 507 flow [2023-11-26 11:57:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:57:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-26 11:57:46,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-26 11:57:46,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-26 11:57:46,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-26 11:57:46,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:46,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-26 11:57:46,479 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) [2023-11-26 11:57:46,480 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) [2023-11-26 11:57:46,481 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) [2023-11-26 11:57:46,481 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 259 flow. Second operand 4 states and 141 transitions. [2023-11-26 11:57:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 507 flow [2023-11-26 11:57:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 89 transitions, 467 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-11-26 11:57:46,628 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 273 flow [2023-11-26 11:57:46,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-11-26 11:57:46,630 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-26 11:57:46,630 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 273 flow [2023-11-26 11:57:46,631 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) [2023-11-26 11:57:46,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:46,631 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] [2023-11-26 11:57:46,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:57:46,631 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)] === [2023-11-26 11:57:46,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1397896694, now seen corresponding path program 1 times [2023-11-26 11:57:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212589233] [2023-11-26 11:57:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212589233] [2023-11-26 11:57:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212589233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:57:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316053980] [2023-11-26 11:57:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:57:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:57:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:46,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 11:57:46,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 273 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) [2023-11-26 11:57:46,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:46,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 11:57:46,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:51,352 INFO L124 PetriNetUnfolderBase]: 23531/35646 cut-off events. [2023-11-26 11:57:51,352 INFO L125 PetriNetUnfolderBase]: For 23665/26367 co-relation queries the response was YES. [2023-11-26 11:57:51,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94428 conditions, 35646 events. 23531/35646 cut-off events. For 23665/26367 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 257552 event pairs, 3133 based on Foata normal form. 1643/36047 useless extension candidates. Maximal degree in co-relation 94407. Up to 12258 conditions per place. [2023-11-26 11:57:51,685 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 77 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-11-26 11:57:51,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 630 flow [2023-11-26 11:57:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:57:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-26 11:57:51,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-26 11:57:51,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-26 11:57:51,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-26 11:57:51,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:51,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-26 11:57:51,690 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) [2023-11-26 11:57:51,691 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) [2023-11-26 11:57:51,692 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) [2023-11-26 11:57:51,692 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 273 flow. Second operand 5 states and 181 transitions. [2023-11-26 11:57:51,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 630 flow [2023-11-26 11:57:51,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:51,725 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 338 flow [2023-11-26 11:57:51,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-11-26 11:57:51,727 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-11-26 11:57:51,727 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 338 flow [2023-11-26 11:57:51,727 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) [2023-11-26 11:57:51,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:51,728 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] [2023-11-26 11:57:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:57:51,728 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)] === [2023-11-26 11:57:51,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -314672278, now seen corresponding path program 1 times [2023-11-26 11:57:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185212758] [2023-11-26 11:57:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:52,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185212758] [2023-11-26 11:57:52,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185212758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:52,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274619680] [2023-11-26 11:57:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:52,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:52,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 11:57:52,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 338 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) [2023-11-26 11:57:52,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:52,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 11:57:52,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:56,219 INFO L124 PetriNetUnfolderBase]: 19323/28986 cut-off events. [2023-11-26 11:57:56,219 INFO L125 PetriNetUnfolderBase]: For 39427/41489 co-relation queries the response was YES. [2023-11-26 11:57:56,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86609 conditions, 28986 events. 19323/28986 cut-off events. For 39427/41489 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 200865 event pairs, 2431 based on Foata normal form. 975/28782 useless extension candidates. Maximal degree in co-relation 86585. Up to 9942 conditions per place. [2023-11-26 11:57:56,483 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 91 selfloop transitions, 14 changer transitions 0/129 dead transitions. [2023-11-26 11:57:56,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 785 flow [2023-11-26 11:57:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:57:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-26 11:57:56,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-26 11:57:56,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-26 11:57:56,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-26 11:57:56,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:56,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-26 11:57:56,492 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) [2023-11-26 11:57:56,493 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) [2023-11-26 11:57:56,493 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) [2023-11-26 11:57:56,494 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 338 flow. Second operand 6 states and 219 transitions. [2023-11-26 11:57:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 785 flow [2023-11-26 11:57:56,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 769 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:56,537 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 408 flow [2023-11-26 11:57:56,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-11-26 11:57:56,538 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2023-11-26 11:57:56,539 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 408 flow [2023-11-26 11:57:56,539 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) [2023-11-26 11:57:56,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:56,540 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] [2023-11-26 11:57:56,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:57:56,540 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)] === [2023-11-26 11:57:56,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:56,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1858748158, now seen corresponding path program 1 times [2023-11-26 11:57:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022460680] [2023-11-26 11:57:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022460680] [2023-11-26 11:57:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022460680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:57:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008603492] [2023-11-26 11:57:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:57:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:57:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 11:57:58,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2023-11-26 11:57:58,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:58,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 11:57:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:03,129 INFO L124 PetriNetUnfolderBase]: 19538/33580 cut-off events. [2023-11-26 11:58:03,129 INFO L125 PetriNetUnfolderBase]: For 51456/61251 co-relation queries the response was YES. [2023-11-26 11:58:03,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97304 conditions, 33580 events. 19538/33580 cut-off events. For 51456/61251 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 306476 event pairs, 6622 based on Foata normal form. 1127/31042 useless extension candidates. Maximal degree in co-relation 97278. Up to 9872 conditions per place. [2023-11-26 11:58:03,703 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 90 selfloop transitions, 9 changer transitions 16/157 dead transitions. [2023-11-26 11:58:03,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 157 transitions, 960 flow [2023-11-26 11:58:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:58:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2023-11-26 11:58:03,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2023-11-26 11:58:03,706 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2023-11-26 11:58:03,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2023-11-26 11:58:03,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:03,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2023-11-26 11:58:03,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:03,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 11:58:03,711 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 11:58:03,711 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 408 flow. Second operand 8 states and 286 transitions. [2023-11-26 11:58:03,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 157 transitions, 960 flow