./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB --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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:00,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:00,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:07:00,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:00,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:00,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:00,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:00,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:00,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:00,823 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:00,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:00,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:00,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:00,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:00,824 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:00,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:00,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:00,826 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:00,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:00,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:00,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:00,827 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:00,828 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB 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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-11-28 02:07:01,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:01,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:01,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:01,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:01,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:01,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/reorder_2.i [2024-11-28 02:07:04,240 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/data/31b0c7faa/33ca5cbfca0540a5ab98cb375a6498b5/FLAG1af18c183 [2024-11-28 02:07:04,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:04,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/sv-benchmarks/c/pthread/reorder_2.i [2024-11-28 02:07:04,702 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/data/31b0c7faa/33ca5cbfca0540a5ab98cb375a6498b5/FLAG1af18c183 [2024-11-28 02:07:04,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/data/31b0c7faa/33ca5cbfca0540a5ab98cb375a6498b5 [2024-11-28 02:07:04,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:04,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:04,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:04,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:04,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:04,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:04" (1/1) ... [2024-11-28 02:07:04,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14837426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:04, skipping insertion in model container [2024-11-28 02:07:04,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:04" (1/1) ... [2024-11-28 02:07:04,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:05,501 WARN L250 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_19d18a9d-d043-43b6-96e3-a90679c20fe7/sv-benchmarks/c/pthread/reorder_2.i[60219,60232] [2024-11-28 02:07:05,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:05,521 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:05,632 WARN L250 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_19d18a9d-d043-43b6-96e3-a90679c20fe7/sv-benchmarks/c/pthread/reorder_2.i[60219,60232] [2024-11-28 02:07:05,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:05,736 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:05,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05 WrapperNode [2024-11-28 02:07:05,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:05,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:05,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:05,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:05,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,786 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2024-11-28 02:07:05,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:05,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:05,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:05,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:05,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,826 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-28 02:07:05,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,833 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:05,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:05,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:05,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:05,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (1/1) ... [2024-11-28 02:07:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:05,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:05,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:05,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19d18a9d-d043-43b6-96e3-a90679c20fe7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:07:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:07:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:07:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:07:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-28 02:07:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-28 02:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-28 02:07:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-28 02:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:05,924 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:07:06,133 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:06,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:06,378 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:06,378 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:06,644 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:06,645 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:07:06,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:06 BoogieIcfgContainer [2024-11-28 02:07:06,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:06,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:06,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:06,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:06,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:04" (1/3) ... [2024-11-28 02:07:06,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5a2a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:06, skipping insertion in model container [2024-11-28 02:07:06,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:05" (2/3) ... [2024-11-28 02:07:06,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5a2a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:06, skipping insertion in model container [2024-11-28 02:07:06,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:06" (3/3) ... [2024-11-28 02:07:06,659 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-11-28 02:07:06,680 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:06,682 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 27 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:07:06,682 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:06,751 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:07:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 86 flow [2024-11-28 02:07:06,872 INFO L124 PetriNetUnfolderBase]: 10/72 cut-off events. [2024-11-28 02:07:06,875 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:07:06,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 72 events. 10/72 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 274 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 38. Up to 7 conditions per place. [2024-11-28 02:07:06,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 86 flow [2024-11-28 02:07:06,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 31 transitions, 76 flow [2024-11-28 02:07:06,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:06,906 INFO L333 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, 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;@577b0df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:06,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:07:06,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:06,919 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-11-28 02:07:06,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:07:06,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:06,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:07:06,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:07:06,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1718511433, now seen corresponding path program 1 times [2024-11-28 02:07:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:06,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333179064] [2024-11-28 02:07:06,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:07,109 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:07,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:07,204 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:07,206 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 02:07:07,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-28 02:07:07,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-28 02:07:07,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-28 02:07:07,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:07:07,212 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:07:07,220 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:07,220 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:07:07,254 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 02:07:07,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 51 transitions, 146 flow [2024-11-28 02:07:07,398 INFO L124 PetriNetUnfolderBase]: 63/259 cut-off events. [2024-11-28 02:07:07,399 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-11-28 02:07:07,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 259 events. 63/259 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1321 event pairs, 1 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 173. Up to 32 conditions per place. [2024-11-28 02:07:07,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 51 transitions, 146 flow [2024-11-28 02:07:07,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 51 transitions, 146 flow [2024-11-28 02:07:07,408 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:07,411 INFO L333 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, 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;@577b0df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:07,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:07:07,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:07,435 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-11-28 02:07:07,435 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-28 02:07:07,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:07,435 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 02:07:07,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:07:07,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash 716965336, now seen corresponding path program 1 times [2024-11-28 02:07:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:07,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368809286] [2024-11-28 02:07:07,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:07,514 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:07,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:07,573 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:07,574 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 02:07:07,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-28 02:07:07,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-28 02:07:07,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 02:07:07,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 02:07:07,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:07:07,575 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:07:07,576 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:07:07,579 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:07:07,627 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-28 02:07:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 69 transitions, 210 flow [2024-11-28 02:07:07,828 INFO L124 PetriNetUnfolderBase]: 348/950 cut-off events. [2024-11-28 02:07:07,828 INFO L125 PetriNetUnfolderBase]: For 419/437 co-relation queries the response was YES. [2024-11-28 02:07:07,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 950 events. 348/950 cut-off events. For 419/437 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5649 event pairs, 32 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 681. Up to 192 conditions per place. [2024-11-28 02:07:07,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 69 transitions, 210 flow [2024-11-28 02:07:07,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 69 transitions, 210 flow [2024-11-28 02:07:07,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:07,853 INFO L333 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, 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;@577b0df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:07,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:07:07,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:07,864 INFO L124 PetriNetUnfolderBase]: 3/59 cut-off events. [2024-11-28 02:07:07,864 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2024-11-28 02:07:07,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:07,864 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:07,867 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:07:07,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash 738469979, now seen corresponding path program 1 times [2024-11-28 02:07:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686524569] [2024-11-28 02:07:07,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686524569] [2024-11-28 02:07:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686524569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:08,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:08,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915004889] [2024-11-28 02:07:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:08,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:08,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:08,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:08,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 69 [2024-11-28 02:07:08,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-11-28 02:07:08,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:08,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 69 [2024-11-28 02:07:08,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand