./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --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_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1 --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 c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:14:55,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:14:55,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:14:55,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:14:55,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:14:55,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:14:55,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:14:55,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:14:55,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:14:55,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:14:55,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:14:55,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:14:55,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:14:55,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:14:55,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:14:55,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:14:55,845 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:14:55,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:14:55,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:14:55,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:14:55,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:14:55,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:14:55,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:14:55,848 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_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1 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 -> c01f4f7d2658db6d4a951cb25555f85a195a1e66c897cc0a3f349ba621d29da1 [2024-12-02 08:14:56,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:14:56,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:14:56,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:14:56,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:14:56,107 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:14:56,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-12-02 08:14:59,060 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/data/fa165054b/5d55530c69dc426c832adb85a4574db5/FLAG111d14e56 [2024-12-02 08:14:59,297 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:14:59,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-12-02 08:14:59,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/data/fa165054b/5d55530c69dc426c832adb85a4574db5/FLAG111d14e56 [2024-12-02 08:14:59,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/data/fa165054b/5d55530c69dc426c832adb85a4574db5 [2024-12-02 08:14:59,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:14:59,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:14:59,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:14:59,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:14:59,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:14:59,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265d920c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59, skipping insertion in model container [2024-12-02 08:14:59,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:14:59,854 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_cbedd799-279d-4275-8595-101732c28f2a/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-12-02 08:14:59,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:14:59,874 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:14:59,903 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_cbedd799-279d-4275-8595-101732c28f2a/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[2888,2901] [2024-12-02 08:14:59,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:14:59,923 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:14:59,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59 WrapperNode [2024-12-02 08:14:59,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:14:59,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:14:59,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:14:59,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:14:59,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,958 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 148 [2024-12-02 08:14:59,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:14:59,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:14:59,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:14:59,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:14:59,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,991 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-12-02 08:14:59,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:14:59,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,000 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:15:00,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:15:00,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:15:00,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:15:00,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (1/1) ... [2024-12-02 08:15:00,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:15:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:00,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:15:00,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbedd799-279d-4275-8595-101732c28f2a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:15:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 08:15:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 08:15:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 08:15:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 08:15:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:15:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-12-02 08:15:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:15:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:15:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:15:00,085 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:15:00,193 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:15:00,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:15:00,533 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:15:00,533 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:15:00,742 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:15:00,742 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 08:15:00,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:15:00 BoogieIcfgContainer [2024-12-02 08:15:00,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:15:00,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:15:00,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:15:00,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:15:00,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:14:59" (1/3) ... [2024-12-02 08:15:00,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efe0119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:15:00, skipping insertion in model container [2024-12-02 08:15:00,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:14:59" (2/3) ... [2024-12-02 08:15:00,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efe0119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:15:00, skipping insertion in model container [2024-12-02 08:15:00,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:15:00" (3/3) ... [2024-12-02 08:15:00,752 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-12-02 08:15:00,766 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:15:00,767 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc-dec.wvr.c that has 6 procedures, 67 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-12-02 08:15:00,767 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:15:00,841 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-12-02 08:15:00,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 73 transitions, 181 flow [2024-12-02 08:15:00,925 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-12-02 08:15:00,927 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-12-02 08:15:00,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 68 events. 7/68 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-12-02 08:15:00,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 73 transitions, 181 flow [2024-12-02 08:15:00,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 164 flow [2024-12-02 08:15:00,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:15:00,956 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;@3c40c01d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:15:00,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 08:15:00,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:15:00,984 INFO L124 PetriNetUnfolderBase]: 7/66 cut-off events. [2024-12-02 08:15:00,984 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-12-02 08:15:00,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:15:00,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:00,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:15:00,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash -903646323, now seen corresponding path program 1 times [2024-12-02 08:15:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688150028] [2024-12-02 08:15:00,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:15:01,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688150028] [2024-12-02 08:15:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688150028] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:01,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:01,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:15:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396868624] [2024-12-02 08:15:01,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:01,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:01,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:15:01,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-12-02 08:15:01,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2024-12-02 08:15:01,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:15:01,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-12-02 08:15:01,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:15:10,580 INFO L124 PetriNetUnfolderBase]: 87344/116898 cut-off events. [2024-12-02 08:15:10,581 INFO L125 PetriNetUnfolderBase]: For 5804/5804 co-relation queries the response was YES. [2024-12-02 08:15:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226941 conditions, 116898 events. 87344/116898 cut-off events. For 5804/5804 co-relation queries the response was YES. Maximal size of possible extension queue 4929. Compared 817013 event pairs, 42022 based on Foata normal form. 1926/114963 useless extension candidates. Maximal degree in co-relation 213467. Up to 62298 conditions per place. [2024-12-02 08:15:11,594 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 71 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-12-02 08:15:11,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 382 flow [2024-12-02 08:15:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:15:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:15:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-12-02 08:15:11,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6267123287671232 [2024-12-02 08:15:11,610 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 164 flow. Second operand 4 states and 183 transitions. [2024-12-02 08:15:11,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 382 flow [2024-12-02 08:15:11,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 354 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-12-02 08:15:11,896 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 158 flow [2024-12-02 08:15:11,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-12-02 08:15:11,902 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-12-02 08:15:11,902 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 158 flow [2024-12-02 08:15:11,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2024-12-02 08:15:11,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:15:11,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:11,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:15:11,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:15:11,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -373303298, now seen corresponding path program 1 times [2024-12-02 08:15:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566679997] [2024-12-02 08:15:11,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:15:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566679997] [2024-12-02 08:15:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566679997] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:15:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028053211] [2024-12-02 08:15:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:12,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:12,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:12,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:15:12,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-12-02 08:15:12,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-12-02 08:15:12,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:15:12,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-12-02 08:15:12,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:15:22,689 INFO L124 PetriNetUnfolderBase]: 127099/176412 cut-off events. [2024-12-02 08:15:22,689 INFO L125 PetriNetUnfolderBase]: For 15612/15612 co-relation queries the response was YES. [2024-12-02 08:15:22,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342353 conditions, 176412 events. 127099/176412 cut-off events. For 15612/15612 co-relation queries the response was YES. Maximal size of possible extension queue 6005. Compared 1336873 event pairs, 66837 based on Foata normal form. 3014/170582 useless extension candidates. Maximal degree in co-relation 29294. Up to 100615 conditions per place. [2024-12-02 08:15:23,712 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-12-02 08:15:23,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 394 flow [2024-12-02 08:15:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:15:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:15:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-12-02 08:15:23,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-12-02 08:15:23,715 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 158 flow. Second operand 4 states and 182 transitions. [2024-12-02 08:15:23,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 394 flow [2024-12-02 08:15:23,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:15:23,768 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 168 flow [2024-12-02 08:15:23,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-12-02 08:15:23,769 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-12-02 08:15:23,769 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 168 flow [2024-12-02 08:15:23,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-12-02 08:15:23,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:15:23,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:23,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:15:23,770 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:15:23,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -710933431, now seen corresponding path program 1 times [2024-12-02 08:15:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209038240] [2024-12-02 08:15:23,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:15:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209038240] [2024-12-02 08:15:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209038240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:15:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959427343] [2024-12-02 08:15:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:23,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:23,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:23,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:15:23,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2024-12-02 08:15:23,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-12-02 08:15:23,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:15:23,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2024-12-02 08:15:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:15:38,089 INFO L124 PetriNetUnfolderBase]: 162318/224249 cut-off events. [2024-12-02 08:15:38,089 INFO L125 PetriNetUnfolderBase]: For 26031/30545 co-relation queries the response was YES. [2024-12-02 08:15:38,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454202 conditions, 224249 events. 162318/224249 cut-off events. For 26031/30545 co-relation queries the response was YES. Maximal size of possible extension queue 5792. Compared 1670858 event pairs, 88812 based on Foata normal form. 8710/223387 useless extension candidates. Maximal degree in co-relation 147971. Up to 127999 conditions per place. [2024-12-02 08:15:39,247 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 77 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-12-02 08:15:39,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 411 flow [2024-12-02 08:15:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:15:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:15:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-12-02 08:15:39,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6198630136986302 [2024-12-02 08:15:39,249 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 168 flow. Second operand 4 states and 181 transitions. [2024-12-02 08:15:39,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 411 flow [2024-12-02 08:15:39,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:15:39,266 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 178 flow [2024-12-02 08:15:39,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-12-02 08:15:39,267 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-12-02 08:15:39,267 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 178 flow [2024-12-02 08:15:39,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-12-02 08:15:39,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:15:39,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:39,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:15:39,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:15:39,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 727119046, now seen corresponding path program 1 times [2024-12-02 08:15:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331241684] [2024-12-02 08:15:39,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:39,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:15:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331241684] [2024-12-02 08:15:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331241684] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:39,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:15:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446611497] [2024-12-02 08:15:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:39,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:39,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:39,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:15:39,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2024-12-02 08:15:39,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-12-02 08:15:39,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:15:39,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2024-12-02 08:15:39,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:15:59,921 INFO L124 PetriNetUnfolderBase]: 228550/299386 cut-off events. [2024-12-02 08:15:59,921 INFO L125 PetriNetUnfolderBase]: For 60900/74320 co-relation queries the response was YES. [2024-12-02 08:16:00,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656149 conditions, 299386 events. 228550/299386 cut-off events. For 60900/74320 co-relation queries the response was YES. Maximal size of possible extension queue 7868. Compared 2101738 event pairs, 119656 based on Foata normal form. 18813/313359 useless extension candidates. Maximal degree in co-relation 215990. Up to 170415 conditions per place. [2024-12-02 08:16:01,835 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 76 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-12-02 08:16:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 423 flow [2024-12-02 08:16:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:16:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:16:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-12-02 08:16:01,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-12-02 08:16:01,837 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 178 flow. Second operand 4 states and 182 transitions. [2024-12-02 08:16:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 423 flow [2024-12-02 08:16:01,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:16:01,861 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 188 flow [2024-12-02 08:16:01,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-12-02 08:16:01,862 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-12-02 08:16:01,862 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 188 flow [2024-12-02 08:16:01,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-12-02 08:16:01,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:16:01,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:01,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:16:01,863 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:16:01,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -249235394, now seen corresponding path program 1 times [2024-12-02 08:16:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:01,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394565995] [2024-12-02 08:16:01,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:16:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:02,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394565995] [2024-12-02 08:16:02,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394565995] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:02,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:02,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:16:02,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085961120] [2024-12-02 08:16:02,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:02,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:16:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:02,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:16:02,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:16:02,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-12-02 08:16:02,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-12-02 08:16:02,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:16:02,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-12-02 08:16:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:16:22,452 INFO L124 PetriNetUnfolderBase]: 229558/302197 cut-off events. [2024-12-02 08:16:22,452 INFO L125 PetriNetUnfolderBase]: For 79322/92742 co-relation queries the response was YES. [2024-12-02 08:16:23,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679050 conditions, 302197 events. 229558/302197 cut-off events. For 79322/92742 co-relation queries the response was YES. Maximal size of possible extension queue 8006. Compared 2136388 event pairs, 200600 based on Foata normal form. 13420/308502 useless extension candidates. Maximal degree in co-relation 224486. Up to 280329 conditions per place. [2024-12-02 08:16:23,937 INFO L140 encePairwiseOnDemand]: 70/73 looper letters, 47 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-12-02 08:16:23,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 288 flow [2024-12-02 08:16:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:16:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:16:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-12-02 08:16:23,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.593607305936073 [2024-12-02 08:16:23,939 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 188 flow. Second operand 3 states and 130 transitions. [2024-12-02 08:16:23,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 288 flow [2024-12-02 08:16:24,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:16:24,209 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 196 flow [2024-12-02 08:16:24,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-12-02 08:16:24,210 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2024-12-02 08:16:24,210 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 196 flow [2024-12-02 08:16:24,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-12-02 08:16:24,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:16:24,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:24,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:16:24,210 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:16:24,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1470102733, now seen corresponding path program 1 times [2024-12-02 08:16:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:24,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86418813] [2024-12-02 08:16:24,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:16:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86418813] [2024-12-02 08:16:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86418813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:16:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916171676] [2024-12-02 08:16:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:24,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:16:24,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:24,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:16:24,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:16:24,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-12-02 08:16:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 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) [2024-12-02 08:16:24,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:16:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-12-02 08:16:24,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand