./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.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_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/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_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/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_030c4d1d-8465-4c5d-895c-710f0605cf13/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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:10:11,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:10:11,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:10:11,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:10:11,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:10:12,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:10:12,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:10:12,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:10:12,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:10:12,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:10:12,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:10:12,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:10:12,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:10:12,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:10:12,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:10:12,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:10:12,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:10:12,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:10:12,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:10:12,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:10:12,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:10:12,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:10:12,031 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:10:12,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:12,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:12,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:12,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:12,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:12,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:10:12,033 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:10:12,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:10:12,034 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_030c4d1d-8465-4c5d-895c-710f0605cf13/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 -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-11-28 04:10:12,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:10:12,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:10:12,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:10:12,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:10:12,427 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:10:12,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-28 04:10:15,562 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/data/8168b2802/0e6c9af334c4461e8572b33de99b7738/FLAGd152bfb1c [2024-11-28 04:10:16,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:10:16,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-28 04:10:16,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/data/8168b2802/0e6c9af334c4461e8572b33de99b7738/FLAGd152bfb1c [2024-11-28 04:10:16,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/data/8168b2802/0e6c9af334c4461e8572b33de99b7738 [2024-11-28 04:10:16,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:10:16,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:10:16,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:16,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:10:16,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:10:16,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e563c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16, skipping insertion in model container [2024-11-28 04:10:16,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:10:16,579 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_030c4d1d-8465-4c5d-895c-710f0605cf13/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-28 04:10:16,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:16,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:10:16,769 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_030c4d1d-8465-4c5d-895c-710f0605cf13/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-28 04:10:16,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:16,805 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:10:16,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16 WrapperNode [2024-11-28 04:10:16,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:16,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:16,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:10:16,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:10:16,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,923 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1547 [2024-11-28 04:10:16,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:16,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:10:16,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:10:16,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:10:16,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,993 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-28 04:10:16,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:16,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:10:17,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:10:17,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:10:17,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:10:17,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (1/1) ... [2024-11-28 04:10:17,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:17,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:17,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:10:17,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:10:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:10:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:10:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:10:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:10:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:10:17,202 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 04:10:17,482 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:10:17,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:10:19,726 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:10:19,727 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:10:22,036 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:10:22,037 INFO L312 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-28 04:10:22,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:22 BoogieIcfgContainer [2024-11-28 04:10:22,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:10:22,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:10:22,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:10:22,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:10:22,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:10:16" (1/3) ... [2024-11-28 04:10:22,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac6d48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:22, skipping insertion in model container [2024-11-28 04:10:22,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:16" (2/3) ... [2024-11-28 04:10:22,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac6d48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:22, skipping insertion in model container [2024-11-28 04:10:22,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:22" (3/3) ... [2024-11-28 04:10:22,048 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-11-28 04:10:22,073 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:10:22,075 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-poker-hand-symm.wvr.c that has 3 procedures, 67 locations, 1 initial locations, 12 loop locations, and 1 error locations. [2024-11-28 04:10:22,075 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:10:22,431 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:10:22,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 94 transitions, 202 flow [2024-11-28 04:10:22,574 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-11-28 04:10:22,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:10:22,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 28/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-11-28 04:10:22,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 94 transitions, 202 flow [2024-11-28 04:10:22,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 194 flow [2024-11-28 04:10:22,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:10:22,615 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;@14084b2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:10:22,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 04:10:22,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:10:22,668 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-11-28 04:10:22,668 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:10:22,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:22,669 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] [2024-11-28 04:10:22,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:22,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1306831955, now seen corresponding path program 1 times [2024-11-28 04:10:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427604971] [2024-11-28 04:10:22,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:23,579 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 04:10:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427604971] [2024-11-28 04:10:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427604971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966294315] [2024-11-28 04:10:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:23,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:23,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:23,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:23,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:23,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 04:10:23,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:23,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:23,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:25,382 INFO L124 PetriNetUnfolderBase]: 2502/3742 cut-off events. [2024-11-28 04:10:25,382 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-28 04:10:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 3742 events. 2502/3742 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17704 event pairs, 1702 based on Foata normal form. 0/2942 useless extension candidates. Maximal degree in co-relation 7372. Up to 3738 conditions per place. [2024-11-28 04:10:25,409 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 82 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-28 04:10:25,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 374 flow [2024-11-28 04:10:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-28 04:10:25,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37943262411347517 [2024-11-28 04:10:25,425 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 194 flow. Second operand 3 states and 107 transitions. [2024-11-28 04:10:25,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 374 flow [2024-11-28 04:10:25,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:10:25,436 INFO L231 Difference]: Finished difference. Result has 69 places, 91 transitions, 220 flow [2024-11-28 04:10:25,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=91} [2024-11-28 04:10:25,442 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-28 04:10:25,442 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 91 transitions, 220 flow [2024-11-28 04:10:25,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 04:10:25,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:25,443 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] [2024-11-28 04:10:25,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:10:25,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:25,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash -547896688, now seen corresponding path program 1 times [2024-11-28 04:10:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:25,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755610529] [2024-11-28 04:10:25,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:10:25,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755610529] [2024-11-28 04:10:25,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755610529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878006120] [2024-11-28 04:10:25,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:25,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:25,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:25,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:25,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:10:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:26,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:10:26,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:10:26,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:10:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878006120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:10:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-28 04:10:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833158311] [2024-11-28 04:10:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:26,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:26,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:26,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:10:26,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:26,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:10:26,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:26,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:27,781 INFO L124 PetriNetUnfolderBase]: 2502/3746 cut-off events. [2024-11-28 04:10:27,782 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-28 04:10:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 3746 events. 2502/3746 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17705 event pairs, 1702 based on Foata normal form. 1/2951 useless extension candidates. Maximal degree in co-relation 7484. Up to 3742 conditions per place. [2024-11-28 04:10:27,803 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 86 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2024-11-28 04:10:27,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 416 flow [2024-11-28 04:10:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-28 04:10:27,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36524822695035464 [2024-11-28 04:10:27,805 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 220 flow. Second operand 3 states and 103 transitions. [2024-11-28 04:10:27,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 416 flow [2024-11-28 04:10:27,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:27,809 INFO L231 Difference]: Finished difference. Result has 71 places, 95 transitions, 256 flow [2024-11-28 04:10:27,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=71, PETRI_TRANSITIONS=95} [2024-11-28 04:10:27,811 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-28 04:10:27,811 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 95 transitions, 256 flow [2024-11-28 04:10:27,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:10:27,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:27,813 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] [2024-11-28 04:10:27,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:10:28,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:28,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash -118009244, now seen corresponding path program 1 times [2024-11-28 04:10:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:28,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317698128] [2024-11-28 04:10:28,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:10:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317698128] [2024-11-28 04:10:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317698128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011134897] [2024-11-28 04:10:28,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:28,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:28,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:28,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:28,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:10:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:28,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:10:28,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:10:28,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:10:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011134897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:28,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:28,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-28 04:10:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567523038] [2024-11-28 04:10:28,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:28,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:10:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:28,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:10:28,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:10:28,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:28,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 04:10:28,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:28,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:28,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:30,540 INFO L124 PetriNetUnfolderBase]: 2502/3770 cut-off events. [2024-11-28 04:10:30,540 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-28 04:10:30,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 3770 events. 2502/3770 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17705 event pairs, 1702 based on Foata normal form. 12/2986 useless extension candidates. Maximal degree in co-relation 7504. Up to 3738 conditions per place. [2024-11-28 04:10:30,558 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 40 changer transitions 0/119 dead transitions. [2024-11-28 04:10:30,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 588 flow [2024-11-28 04:10:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:10:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:10:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-11-28 04:10:30,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.22074468085106383 [2024-11-28 04:10:30,560 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 256 flow. Second operand 8 states and 166 transitions. [2024-11-28 04:10:30,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 588 flow [2024-11-28 04:10:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:30,564 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 486 flow [2024-11-28 04:10:30,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-11-28 04:10:30,565 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-28 04:10:30,565 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 486 flow [2024-11-28 04:10:30,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 04:10:30,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:30,566 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:30,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:10:30,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:30,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:30,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 826520661, now seen corresponding path program 2 times [2024-11-28 04:10:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629173157] [2024-11-28 04:10:30,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:30,851 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:10:30,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:10:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:31,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629173157] [2024-11-28 04:10:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629173157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:31,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:10:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446263653] [2024-11-28 04:10:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:31,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:10:31,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:31,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:10:31,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:10:31,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:31,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:10:31,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:31,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:31,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:33,789 INFO L124 PetriNetUnfolderBase]: 3916/5914 cut-off events. [2024-11-28 04:10:33,789 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-28 04:10:33,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11991 conditions, 5914 events. 3916/5914 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30656 event pairs, 1413 based on Foata normal form. 1/4706 useless extension candidates. Maximal degree in co-relation 11819. Up to 3014 conditions per place. [2024-11-28 04:10:33,824 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 193 selfloop transitions, 22 changer transitions 9/225 dead transitions. [2024-11-28 04:10:33,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 225 transitions, 1152 flow [2024-11-28 04:10:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:10:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:10:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-28 04:10:33,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44468085106382976 [2024-11-28 04:10:33,829 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 486 flow. Second operand 5 states and 209 transitions. [2024-11-28 04:10:33,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 225 transitions, 1152 flow [2024-11-28 04:10:33,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 225 transitions, 1070 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-28 04:10:33,840 INFO L231 Difference]: Finished difference. Result has 84 places, 137 transitions, 547 flow [2024-11-28 04:10:33,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=547, PETRI_PLACES=84, PETRI_TRANSITIONS=137} [2024-11-28 04:10:33,843 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-11-28 04:10:33,843 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 137 transitions, 547 flow [2024-11-28 04:10:33,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:10:33,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:33,843 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:33,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:10:33,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:33,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash -383215477, now seen corresponding path program 3 times [2024-11-28 04:10:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768005996] [2024-11-28 04:10:33,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:10:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:33,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:10:33,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:10:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768005996] [2024-11-28 04:10:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768005996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:34,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:34,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:10:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661748319] [2024-11-28 04:10:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:34,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:10:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:34,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:10:34,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:10:34,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:34,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 137 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:10:34,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:34,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:34,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:36,331 INFO L124 PetriNetUnfolderBase]: 4031/6130 cut-off events. [2024-11-28 04:10:36,331 INFO L125 PetriNetUnfolderBase]: For 866/866 co-relation queries the response was YES. [2024-11-28 04:10:36,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14724 conditions, 6130 events. 4031/6130 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 32437 event pairs, 1419 based on Foata normal form. 1/4889 useless extension candidates. Maximal degree in co-relation 14691. Up to 3289 conditions per place. [2024-11-28 04:10:36,358 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 191 selfloop transitions, 22 changer transitions 9/223 dead transitions. [2024-11-28 04:10:36,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 223 transitions, 1190 flow [2024-11-28 04:10:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:10:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:10:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-28 04:10:36,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44042553191489364 [2024-11-28 04:10:36,360 INFO L175 Difference]: Start difference. First operand has 84 places, 137 transitions, 547 flow. Second operand 5 states and 207 transitions. [2024-11-28 04:10:36,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 223 transitions, 1190 flow [2024-11-28 04:10:36,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 223 transitions, 1182 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:36,383 INFO L231 Difference]: Finished difference. Result has 89 places, 137 transitions, 597 flow [2024-11-28 04:10:36,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=89, PETRI_TRANSITIONS=137} [2024-11-28 04:10:36,384 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-28 04:10:36,386 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 137 transitions, 597 flow [2024-11-28 04:10:36,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:10:36,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:36,386 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:36,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:10:36,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:36,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1225367404, now seen corresponding path program 1 times [2024-11-28 04:10:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455687573] [2024-11-28 04:10:36,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:10:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455687573] [2024-11-28 04:10:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455687573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:36,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497395795] [2024-11-28 04:10:36,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:36,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:36,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:36,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:10:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:37,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:10:37,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:10:37,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:10:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497395795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:37,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-28 04:10:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465767527] [2024-11-28 04:10:37,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:37,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:10:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:37,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:10:37,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:10:37,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:37,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 137 transitions, 597 flow. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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 04:10:37,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:37,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:39,460 INFO L124 PetriNetUnfolderBase]: 4018/6110 cut-off events. [2024-11-28 04:10:39,460 INFO L125 PetriNetUnfolderBase]: For 2556/2556 co-relation queries the response was YES. [2024-11-28 04:10:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15579 conditions, 6110 events. 4018/6110 cut-off events. For 2556/2556 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 31887 event pairs, 2847 based on Foata normal form. 1/4869 useless extension candidates. Maximal degree in co-relation 15543. Up to 6072 conditions per place. [2024-11-28 04:10:39,487 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 96 selfloop transitions, 44 changer transitions 0/141 dead transitions. [2024-11-28 04:10:39,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 141 transitions, 901 flow [2024-11-28 04:10:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:10:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:10:39,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-11-28 04:10:39,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.15377176015473887 [2024-11-28 04:10:39,490 INFO L175 Difference]: Start difference. First operand has 89 places, 137 transitions, 597 flow. Second operand 11 states and 159 transitions. [2024-11-28 04:10:39,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 141 transitions, 901 flow [2024-11-28 04:10:39,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 876 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 04:10:39,512 INFO L231 Difference]: Finished difference. Result has 97 places, 141 transitions, 702 flow [2024-11-28 04:10:39,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=702, PETRI_PLACES=97, PETRI_TRANSITIONS=141} [2024-11-28 04:10:39,513 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2024-11-28 04:10:39,513 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 141 transitions, 702 flow [2024-11-28 04:10:39,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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 04:10:39,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:39,514 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:39,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:10:39,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:39,718 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:39,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:39,718 INFO L85 PathProgramCache]: Analyzing trace with hash -623470080, now seen corresponding path program 2 times [2024-11-28 04:10:39,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:39,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650376432] [2024-11-28 04:10:39,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:39,780 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:10:39,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 04:10:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:40,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650376432] [2024-11-28 04:10:40,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650376432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:40,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:40,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359795088] [2024-11-28 04:10:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:40,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:40,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:40,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:40,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:40,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 141 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:40,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:40,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:40,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:41,526 INFO L124 PetriNetUnfolderBase]: 4278/6606 cut-off events. [2024-11-28 04:10:41,526 INFO L125 PetriNetUnfolderBase]: For 1413/1413 co-relation queries the response was YES. [2024-11-28 04:10:41,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16602 conditions, 6606 events. 4278/6606 cut-off events. For 1413/1413 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 35987 event pairs, 2723 based on Foata normal form. 70/5360 useless extension candidates. Maximal degree in co-relation 16351. Up to 5593 conditions per place. [2024-11-28 04:10:41,553 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 177 selfloop transitions, 3 changer transitions 1/182 dead transitions. [2024-11-28 04:10:41,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 1175 flow [2024-11-28 04:10:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-28 04:10:41,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-11-28 04:10:41,556 INFO L175 Difference]: Start difference. First operand has 97 places, 141 transitions, 702 flow. Second operand 3 states and 138 transitions. [2024-11-28 04:10:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 1175 flow [2024-11-28 04:10:41,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 182 transitions, 1095 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-28 04:10:41,580 INFO L231 Difference]: Finished difference. Result has 94 places, 141 transitions, 633 flow [2024-11-28 04:10:41,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=94, PETRI_TRANSITIONS=141} [2024-11-28 04:10:41,583 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 24 predicate places. [2024-11-28 04:10:41,584 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 141 transitions, 633 flow [2024-11-28 04:10:41,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:41,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:41,586 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:41,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:10:41,586 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:41,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1180591388, now seen corresponding path program 1 times [2024-11-28 04:10:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486043677] [2024-11-28 04:10:41,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 04:10:42,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486043677] [2024-11-28 04:10:42,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486043677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:42,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631875363] [2024-11-28 04:10:42,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:42,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:42,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:42,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:42,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:10:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:42,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:10:42,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 04:10:42,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 04:10:42,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631875363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:42,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:42,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-28 04:10:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516945927] [2024-11-28 04:10:42,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:42,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:10:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:42,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:10:42,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=205, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:10:42,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:42,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 141 transitions, 633 flow. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 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 04:10:42,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:42,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:42,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:44,688 INFO L124 PetriNetUnfolderBase]: 4278/6620 cut-off events. [2024-11-28 04:10:44,688 INFO L125 PetriNetUnfolderBase]: For 1673/1673 co-relation queries the response was YES. [2024-11-28 04:10:44,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16883 conditions, 6620 events. 4278/6620 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 35926 event pairs, 3164 based on Foata normal form. 14/5318 useless extension candidates. Maximal degree in co-relation 16634. Up to 6566 conditions per place. [2024-11-28 04:10:44,724 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 96 selfloop transitions, 58 changer transitions 0/155 dead transitions. [2024-11-28 04:10:44,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 155 transitions, 1053 flow [2024-11-28 04:10:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:10:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:10:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 192 transitions. [2024-11-28 04:10:44,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1458966565349544 [2024-11-28 04:10:44,727 INFO L175 Difference]: Start difference. First operand has 94 places, 141 transitions, 633 flow. Second operand 14 states and 192 transitions. [2024-11-28 04:10:44,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 155 transitions, 1053 flow [2024-11-28 04:10:44,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1050 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:44,746 INFO L231 Difference]: Finished difference. Result has 113 places, 155 transitions, 956 flow [2024-11-28 04:10:44,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=956, PETRI_PLACES=113, PETRI_TRANSITIONS=155} [2024-11-28 04:10:44,751 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2024-11-28 04:10:44,751 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 155 transitions, 956 flow [2024-11-28 04:10:44,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 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 04:10:44,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:44,751 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:44,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:10:44,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:44,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:44,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1268348614, now seen corresponding path program 2 times [2024-11-28 04:10:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:44,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729604132] [2024-11-28 04:10:44,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:44,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:45,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:10:45,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-28 04:10:45,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:45,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729604132] [2024-11-28 04:10:45,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729604132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:45,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:45,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117848650] [2024-11-28 04:10:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:45,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:45,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:45,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:45,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:45,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 155 transitions, 956 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:45,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:45,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:47,797 INFO L124 PetriNetUnfolderBase]: 4557/7166 cut-off events. [2024-11-28 04:10:47,798 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2024-11-28 04:10:47,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18023 conditions, 7166 events. 4557/7166 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 40344 event pairs, 2956 based on Foata normal form. 75/5842 useless extension candidates. Maximal degree in co-relation 17682. Up to 6021 conditions per place. [2024-11-28 04:10:47,848 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 190 selfloop transitions, 3 changer transitions 1/195 dead transitions. [2024-11-28 04:10:47,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 195 transitions, 1456 flow [2024-11-28 04:10:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-28 04:10:47,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-11-28 04:10:47,851 INFO L175 Difference]: Start difference. First operand has 113 places, 155 transitions, 956 flow. Second operand 3 states and 136 transitions. [2024-11-28 04:10:47,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 195 transitions, 1456 flow [2024-11-28 04:10:47,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1384 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:47,873 INFO L231 Difference]: Finished difference. Result has 115 places, 155 transitions, 895 flow [2024-11-28 04:10:47,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=895, PETRI_PLACES=115, PETRI_TRANSITIONS=155} [2024-11-28 04:10:47,874 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 45 predicate places. [2024-11-28 04:10:47,875 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 155 transitions, 895 flow [2024-11-28 04:10:47,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:47,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:47,875 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:47,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:10:47,876 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:47,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1219968359, now seen corresponding path program 1 times [2024-11-28 04:10:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972946345] [2024-11-28 04:10:47,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-28 04:10:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972946345] [2024-11-28 04:10:48,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972946345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574156739] [2024-11-28 04:10:48,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:48,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:48,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:48,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:10:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:49,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:10:49,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-28 04:10:49,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-28 04:10:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574156739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:50,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2024-11-28 04:10:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42319830] [2024-11-28 04:10:50,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:50,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 04:10:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:50,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 04:10:50,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1054, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:10:50,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:50,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 155 transitions, 895 flow. Second operand has 41 states, 41 states have (on average 4.829268292682927) internal successors, (198), 41 states have internal predecessors, (198), 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 04:10:50,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:50,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:52,189 INFO L124 PetriNetUnfolderBase]: 4557/7168 cut-off events. [2024-11-28 04:10:52,189 INFO L125 PetriNetUnfolderBase]: For 2122/2122 co-relation queries the response was YES. [2024-11-28 04:10:52,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18285 conditions, 7168 events. 4557/7168 cut-off events. For 2122/2122 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 40390 event pairs, 3502 based on Foata normal form. 2/5771 useless extension candidates. Maximal degree in co-relation 17911. Up to 7109 conditions per place. [2024-11-28 04:10:52,221 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 96 selfloop transitions, 60 changer transitions 0/157 dead transitions. [2024-11-28 04:10:52,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 1227 flow [2024-11-28 04:10:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:10:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 04:10:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 200 transitions. [2024-11-28 04:10:52,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.10638297872340426 [2024-11-28 04:10:52,224 INFO L175 Difference]: Start difference. First operand has 115 places, 155 transitions, 895 flow. Second operand 20 states and 200 transitions. [2024-11-28 04:10:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 1227 flow [2024-11-28 04:10:52,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 157 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:10:52,248 INFO L231 Difference]: Finished difference. Result has 134 places, 157 transitions, 1042 flow [2024-11-28 04:10:52,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1042, PETRI_PLACES=134, PETRI_TRANSITIONS=157} [2024-11-28 04:10:52,249 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 64 predicate places. [2024-11-28 04:10:52,249 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 157 transitions, 1042 flow [2024-11-28 04:10:52,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.829268292682927) internal successors, (198), 41 states have internal predecessors, (198), 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 04:10:52,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:52,249 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:52,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:10:52,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:52,450 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:52,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2056574993, now seen corresponding path program 2 times [2024-11-28 04:10:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233975043] [2024-11-28 04:10:52,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:10:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:52,518 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:10:52,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:10:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:52,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233975043] [2024-11-28 04:10:52,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233975043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:52,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644803086] [2024-11-28 04:10:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:52,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:52,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:52,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:52,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:52,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 157 transitions, 1042 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:52,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:52,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:54,913 INFO L124 PetriNetUnfolderBase]: 4899/7883 cut-off events. [2024-11-28 04:10:54,913 INFO L125 PetriNetUnfolderBase]: For 2351/2351 co-relation queries the response was YES. [2024-11-28 04:10:54,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19739 conditions, 7883 events. 4899/7883 cut-off events. For 2351/2351 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 47391 event pairs, 2619 based on Foata normal form. 160/6517 useless extension candidates. Maximal degree in co-relation 19307. Up to 5346 conditions per place. [2024-11-28 04:10:54,939 INFO L140 encePairwiseOnDemand]: 78/94 looper letters, 200 selfloop transitions, 11 changer transitions 9/221 dead transitions. [2024-11-28 04:10:54,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 221 transitions, 1672 flow [2024-11-28 04:10:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-28 04:10:54,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5780141843971631 [2024-11-28 04:10:54,941 INFO L175 Difference]: Start difference. First operand has 134 places, 157 transitions, 1042 flow. Second operand 3 states and 163 transitions. [2024-11-28 04:10:54,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 221 transitions, 1672 flow [2024-11-28 04:10:54,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 221 transitions, 1520 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-11-28 04:10:54,962 INFO L231 Difference]: Finished difference. Result has 125 places, 166 transitions, 1030 flow [2024-11-28 04:10:54,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1030, PETRI_PLACES=125, PETRI_TRANSITIONS=166} [2024-11-28 04:10:54,963 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2024-11-28 04:10:54,963 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 166 transitions, 1030 flow [2024-11-28 04:10:54,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:54,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:54,963 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:54,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:10:54,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:54,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1255358503, now seen corresponding path program 3 times [2024-11-28 04:10:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662673954] [2024-11-28 04:10:54,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:10:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:55,088 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:10:55,089 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:10:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662673954] [2024-11-28 04:10:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662673954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:55,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448182687] [2024-11-28 04:10:55,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:55,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:55,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:55,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:55,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:55,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 166 transitions, 1030 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:55,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:55,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:55,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:10:57,061 INFO L124 PetriNetUnfolderBase]: 4311/6969 cut-off events. [2024-11-28 04:10:57,061 INFO L125 PetriNetUnfolderBase]: For 4378/4378 co-relation queries the response was YES. [2024-11-28 04:10:57,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18545 conditions, 6969 events. 4311/6969 cut-off events. For 4378/4378 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40827 event pairs, 2219 based on Foata normal form. 91/5655 useless extension candidates. Maximal degree in co-relation 18217. Up to 3963 conditions per place. [2024-11-28 04:10:57,095 INFO L140 encePairwiseOnDemand]: 80/94 looper letters, 195 selfloop transitions, 17 changer transitions 4/217 dead transitions. [2024-11-28 04:10:57,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 217 transitions, 1625 flow [2024-11-28 04:10:57,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:10:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:10:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-28 04:10:57,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-11-28 04:10:57,097 INFO L175 Difference]: Start difference. First operand has 125 places, 166 transitions, 1030 flow. Second operand 3 states and 148 transitions. [2024-11-28 04:10:57,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 217 transitions, 1625 flow [2024-11-28 04:10:57,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 217 transitions, 1613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:10:57,126 INFO L231 Difference]: Finished difference. Result has 127 places, 178 transitions, 1202 flow [2024-11-28 04:10:57,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1202, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2024-11-28 04:10:57,127 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 57 predicate places. [2024-11-28 04:10:57,127 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 1202 flow [2024-11-28 04:10:57,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:57,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:10:57,127 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:10:57,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:10:57,127 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:10:57,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1462992385, now seen corresponding path program 1 times [2024-11-28 04:10:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:57,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672068653] [2024-11-28 04:10:57,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:10:58,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:58,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672068653] [2024-11-28 04:10:58,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672068653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:58,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:10:58,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713761085] [2024-11-28 04:10:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:58,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:10:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:58,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:10:58,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:10:58,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:10:58,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 1202 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:10:58,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:10:58,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:10:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:00,454 INFO L124 PetriNetUnfolderBase]: 4091/6639 cut-off events. [2024-11-28 04:11:00,454 INFO L125 PetriNetUnfolderBase]: For 6203/6203 co-relation queries the response was YES. [2024-11-28 04:11:00,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18408 conditions, 6639 events. 4091/6639 cut-off events. For 6203/6203 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38969 event pairs, 2109 based on Foata normal form. 81/5344 useless extension candidates. Maximal degree in co-relation 18079. Up to 3719 conditions per place. [2024-11-28 04:11:00,472 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 185 selfloop transitions, 4 changer transitions 18/208 dead transitions. [2024-11-28 04:11:00,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 208 transitions, 1635 flow [2024-11-28 04:11:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-28 04:11:00,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-11-28 04:11:00,473 INFO L175 Difference]: Start difference. First operand has 127 places, 178 transitions, 1202 flow. Second operand 3 states and 142 transitions. [2024-11-28 04:11:00,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 208 transitions, 1635 flow [2024-11-28 04:11:00,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 208 transitions, 1625 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:00,495 INFO L231 Difference]: Finished difference. Result has 130 places, 174 transitions, 1166 flow [2024-11-28 04:11:00,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=130, PETRI_TRANSITIONS=174} [2024-11-28 04:11:00,496 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-28 04:11:00,496 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 174 transitions, 1166 flow [2024-11-28 04:11:00,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:11:00,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:00,496 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:00,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:11:00,497 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:00,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash 960897153, now seen corresponding path program 1 times [2024-11-28 04:11:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842923225] [2024-11-28 04:11:00,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842923225] [2024-11-28 04:11:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842923225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:01,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363630312] [2024-11-28 04:11:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:01,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:01,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:01,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:01,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 174 transitions, 1166 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 04:11:01,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:01,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:01,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:02,789 INFO L124 PetriNetUnfolderBase]: 4223/6902 cut-off events. [2024-11-28 04:11:02,790 INFO L125 PetriNetUnfolderBase]: For 5763/5763 co-relation queries the response was YES. [2024-11-28 04:11:02,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19335 conditions, 6902 events. 4223/6902 cut-off events. For 5763/5763 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41173 event pairs, 1571 based on Foata normal form. 1/5492 useless extension candidates. Maximal degree in co-relation 19005. Up to 4251 conditions per place. [2024-11-28 04:11:02,811 INFO L140 encePairwiseOnDemand]: 75/94 looper letters, 214 selfloop transitions, 29 changer transitions 11/255 dead transitions. [2024-11-28 04:11:02,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 255 transitions, 1889 flow [2024-11-28 04:11:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:11:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-11-28 04:11:02,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-28 04:11:02,813 INFO L175 Difference]: Start difference. First operand has 130 places, 174 transitions, 1166 flow. Second operand 5 states and 200 transitions. [2024-11-28 04:11:02,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 255 transitions, 1889 flow [2024-11-28 04:11:02,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 255 transitions, 1885 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:02,837 INFO L231 Difference]: Finished difference. Result has 135 places, 174 transitions, 1229 flow [2024-11-28 04:11:02,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1229, PETRI_PLACES=135, PETRI_TRANSITIONS=174} [2024-11-28 04:11:02,838 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-28 04:11:02,838 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 174 transitions, 1229 flow [2024-11-28 04:11:02,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 04:11:02,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:02,839 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:02,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:11:02,839 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:02,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash 751587705, now seen corresponding path program 2 times [2024-11-28 04:11:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135318170] [2024-11-28 04:11:02,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:02,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:02,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:03,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:03,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135318170] [2024-11-28 04:11:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135318170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:03,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:03,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729915434] [2024-11-28 04:11:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:03,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:03,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:03,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:03,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:03,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 174 transitions, 1229 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 04:11:03,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:03,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:03,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:05,112 INFO L124 PetriNetUnfolderBase]: 4320/7097 cut-off events. [2024-11-28 04:11:05,112 INFO L125 PetriNetUnfolderBase]: For 7539/7539 co-relation queries the response was YES. [2024-11-28 04:11:05,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20426 conditions, 7097 events. 4320/7097 cut-off events. For 7539/7539 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42926 event pairs, 1577 based on Foata normal form. 1/5659 useless extension candidates. Maximal degree in co-relation 20336. Up to 4491 conditions per place. [2024-11-28 04:11:05,136 INFO L140 encePairwiseOnDemand]: 75/94 looper letters, 212 selfloop transitions, 29 changer transitions 11/253 dead transitions. [2024-11-28 04:11:05,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 253 transitions, 1950 flow [2024-11-28 04:11:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:11:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-28 04:11:05,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42127659574468085 [2024-11-28 04:11:05,138 INFO L175 Difference]: Start difference. First operand has 135 places, 174 transitions, 1229 flow. Second operand 5 states and 198 transitions. [2024-11-28 04:11:05,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 253 transitions, 1950 flow [2024-11-28 04:11:05,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 253 transitions, 1915 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 04:11:05,169 INFO L231 Difference]: Finished difference. Result has 138 places, 174 transitions, 1263 flow [2024-11-28 04:11:05,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1263, PETRI_PLACES=138, PETRI_TRANSITIONS=174} [2024-11-28 04:11:05,170 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-28 04:11:05,170 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 174 transitions, 1263 flow [2024-11-28 04:11:05,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 04:11:05,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:05,171 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:05,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:11:05,171 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:05,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 524779713, now seen corresponding path program 1 times [2024-11-28 04:11:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:05,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100068770] [2024-11-28 04:11:05,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100068770] [2024-11-28 04:11:05,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100068770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:05,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:05,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895486061] [2024-11-28 04:11:05,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:05,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:05,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:05,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:05,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:05,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 174 transitions, 1263 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 04:11:05,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:05,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:05,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:07,345 INFO L124 PetriNetUnfolderBase]: 4270/7036 cut-off events. [2024-11-28 04:11:07,345 INFO L125 PetriNetUnfolderBase]: For 7851/7851 co-relation queries the response was YES. [2024-11-28 04:11:07,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20724 conditions, 7036 events. 4270/7036 cut-off events. For 7851/7851 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43013 event pairs, 1184 based on Foata normal form. 41/5638 useless extension candidates. Maximal degree in co-relation 20632. Up to 5671 conditions per place. [2024-11-28 04:11:07,369 INFO L140 encePairwiseOnDemand]: 78/94 looper letters, 184 selfloop transitions, 16 changer transitions 2/203 dead transitions. [2024-11-28 04:11:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 203 transitions, 1691 flow [2024-11-28 04:11:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-28 04:11:07,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-11-28 04:11:07,370 INFO L175 Difference]: Start difference. First operand has 138 places, 174 transitions, 1263 flow. Second operand 3 states and 142 transitions. [2024-11-28 04:11:07,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 203 transitions, 1691 flow [2024-11-28 04:11:07,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 203 transitions, 1656 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-28 04:11:07,387 INFO L231 Difference]: Finished difference. Result has 138 places, 171 transitions, 1236 flow [2024-11-28 04:11:07,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1236, PETRI_PLACES=138, PETRI_TRANSITIONS=171} [2024-11-28 04:11:07,388 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-28 04:11:07,388 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 171 transitions, 1236 flow [2024-11-28 04:11:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 04:11:07,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:07,388 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:07,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:11:07,388 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:07,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -315887915, now seen corresponding path program 2 times [2024-11-28 04:11:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912328923] [2024-11-28 04:11:07,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:07,443 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:07,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-28 04:11:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:07,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912328923] [2024-11-28 04:11:07,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912328923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:07,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522338051] [2024-11-28 04:11:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:07,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:07,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:07,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:07,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:07,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 171 transitions, 1236 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 04:11:07,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:07,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:07,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:09,370 INFO L124 PetriNetUnfolderBase]: 4170/6838 cut-off events. [2024-11-28 04:11:09,370 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2024-11-28 04:11:09,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20931 conditions, 6838 events. 4170/6838 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40583 event pairs, 3295 based on Foata normal form. 9/5426 useless extension candidates. Maximal degree in co-relation 20594. Up to 6523 conditions per place. [2024-11-28 04:11:09,402 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 164 selfloop transitions, 0 changer transitions 36/201 dead transitions. [2024-11-28 04:11:09,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1686 flow [2024-11-28 04:11:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-28 04:11:09,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-11-28 04:11:09,403 INFO L175 Difference]: Start difference. First operand has 138 places, 171 transitions, 1236 flow. Second operand 3 states and 129 transitions. [2024-11-28 04:11:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1686 flow [2024-11-28 04:11:09,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 201 transitions, 1672 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:09,428 INFO L231 Difference]: Finished difference. Result has 139 places, 165 transitions, 1172 flow [2024-11-28 04:11:09,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1172, PETRI_PLACES=139, PETRI_TRANSITIONS=165} [2024-11-28 04:11:09,428 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 69 predicate places. [2024-11-28 04:11:09,428 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 165 transitions, 1172 flow [2024-11-28 04:11:09,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 04:11:09,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:09,429 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:09,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:11:09,429 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:09,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1507629849, now seen corresponding path program 1 times [2024-11-28 04:11:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379468855] [2024-11-28 04:11:09,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379468855] [2024-11-28 04:11:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379468855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:10,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527349186] [2024-11-28 04:11:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:10,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:10,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:10,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 165 transitions, 1172 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:10,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:10,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:10,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:12,131 INFO L124 PetriNetUnfolderBase]: 3816/6358 cut-off events. [2024-11-28 04:11:12,131 INFO L125 PetriNetUnfolderBase]: For 6332/6332 co-relation queries the response was YES. [2024-11-28 04:11:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18544 conditions, 6358 events. 3816/6358 cut-off events. For 6332/6332 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38251 event pairs, 2185 based on Foata normal form. 100/5240 useless extension candidates. Maximal degree in co-relation 18510. Up to 3826 conditions per place. [2024-11-28 04:11:12,161 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 179 selfloop transitions, 12 changer transitions 7/199 dead transitions. [2024-11-28 04:11:12,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 199 transitions, 1639 flow [2024-11-28 04:11:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-28 04:11:12,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-11-28 04:11:12,163 INFO L175 Difference]: Start difference. First operand has 139 places, 165 transitions, 1172 flow. Second operand 3 states and 133 transitions. [2024-11-28 04:11:12,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 199 transitions, 1639 flow [2024-11-28 04:11:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 199 transitions, 1583 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-28 04:11:12,177 INFO L231 Difference]: Finished difference. Result has 137 places, 167 transitions, 1188 flow [2024-11-28 04:11:12,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1188, PETRI_PLACES=137, PETRI_TRANSITIONS=167} [2024-11-28 04:11:12,178 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 67 predicate places. [2024-11-28 04:11:12,178 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 167 transitions, 1188 flow [2024-11-28 04:11:12,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:12,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:12,178 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:12,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:11:12,178 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:12,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 980916473, now seen corresponding path program 2 times [2024-11-28 04:11:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614990262] [2024-11-28 04:11:12,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:12,234 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:12,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614990262] [2024-11-28 04:11:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614990262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:12,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608810773] [2024-11-28 04:11:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:12,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:12,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:12,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:12,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:12,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 167 transitions, 1188 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:12,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:12,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:14,533 INFO L124 PetriNetUnfolderBase]: 3697/6151 cut-off events. [2024-11-28 04:11:14,533 INFO L125 PetriNetUnfolderBase]: For 5437/5437 co-relation queries the response was YES. [2024-11-28 04:11:14,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17677 conditions, 6151 events. 3697/6151 cut-off events. For 5437/5437 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 36556 event pairs, 2839 based on Foata normal form. 54/4996 useless extension candidates. Maximal degree in co-relation 17643. Up to 5496 conditions per place. [2024-11-28 04:11:14,556 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 180 selfloop transitions, 4 changer transitions 8/193 dead transitions. [2024-11-28 04:11:14,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 193 transitions, 1561 flow [2024-11-28 04:11:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-28 04:11:14,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-11-28 04:11:14,557 INFO L175 Difference]: Start difference. First operand has 137 places, 167 transitions, 1188 flow. Second operand 3 states and 133 transitions. [2024-11-28 04:11:14,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 193 transitions, 1561 flow [2024-11-28 04:11:14,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 193 transitions, 1555 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:14,570 INFO L231 Difference]: Finished difference. Result has 138 places, 161 transitions, 1112 flow [2024-11-28 04:11:14,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1112, PETRI_PLACES=138, PETRI_TRANSITIONS=161} [2024-11-28 04:11:14,571 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-28 04:11:14,571 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 161 transitions, 1112 flow [2024-11-28 04:11:14,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:14,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:14,571 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:14,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:11:14,571 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:14,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1957054592, now seen corresponding path program 1 times [2024-11-28 04:11:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726901010] [2024-11-28 04:11:14,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726901010] [2024-11-28 04:11:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726901010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676148351] [2024-11-28 04:11:15,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:15,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:15,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:15,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:15,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:15,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 161 transitions, 1112 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:15,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:15,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:15,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:17,544 INFO L124 PetriNetUnfolderBase]: 3867/6517 cut-off events. [2024-11-28 04:11:17,544 INFO L125 PetriNetUnfolderBase]: For 4631/4631 co-relation queries the response was YES. [2024-11-28 04:11:17,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18542 conditions, 6517 events. 3867/6517 cut-off events. For 4631/4631 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 39977 event pairs, 3003 based on Foata normal form. 27/5281 useless extension candidates. Maximal degree in co-relation 18508. Up to 5703 conditions per place. [2024-11-28 04:11:17,570 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 183 selfloop transitions, 8 changer transitions 13/205 dead transitions. [2024-11-28 04:11:17,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 205 transitions, 1639 flow [2024-11-28 04:11:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-28 04:11:17,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 04:11:17,571 INFO L175 Difference]: Start difference. First operand has 138 places, 161 transitions, 1112 flow. Second operand 3 states and 141 transitions. [2024-11-28 04:11:17,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 205 transitions, 1639 flow [2024-11-28 04:11:17,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 205 transitions, 1635 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:17,592 INFO L231 Difference]: Finished difference. Result has 141 places, 161 transitions, 1150 flow [2024-11-28 04:11:17,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1150, PETRI_PLACES=141, PETRI_TRANSITIONS=161} [2024-11-28 04:11:17,593 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 71 predicate places. [2024-11-28 04:11:17,593 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 161 transitions, 1150 flow [2024-11-28 04:11:17,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:17,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:17,594 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:11:17,594 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:17,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -820759656, now seen corresponding path program 2 times [2024-11-28 04:11:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44073627] [2024-11-28 04:11:17,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:17,663 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:17,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44073627] [2024-11-28 04:11:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44073627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387500168] [2024-11-28 04:11:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:18,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:18,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:18,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:18,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:18,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 161 transitions, 1150 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:18,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:18,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:18,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:20,430 INFO L124 PetriNetUnfolderBase]: 3579/6020 cut-off events. [2024-11-28 04:11:20,430 INFO L125 PetriNetUnfolderBase]: For 5236/5236 co-relation queries the response was YES. [2024-11-28 04:11:20,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 6020 events. 3579/6020 cut-off events. For 5236/5236 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36507 event pairs, 1997 based on Foata normal form. 59/4870 useless extension candidates. Maximal degree in co-relation 16970. Up to 3489 conditions per place. [2024-11-28 04:11:20,459 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 171 selfloop transitions, 6 changer transitions 9/187 dead transitions. [2024-11-28 04:11:20,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 187 transitions, 1497 flow [2024-11-28 04:11:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-28 04:11:20,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-11-28 04:11:20,460 INFO L175 Difference]: Start difference. First operand has 141 places, 161 transitions, 1150 flow. Second operand 3 states and 131 transitions. [2024-11-28 04:11:20,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 187 transitions, 1497 flow [2024-11-28 04:11:20,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 187 transitions, 1445 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-28 04:11:20,521 INFO L231 Difference]: Finished difference. Result has 138 places, 153 transitions, 1014 flow [2024-11-28 04:11:20,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1014, PETRI_PLACES=138, PETRI_TRANSITIONS=153} [2024-11-28 04:11:20,522 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-28 04:11:20,522 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 153 transitions, 1014 flow [2024-11-28 04:11:20,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 04:11:20,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:20,523 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:20,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:11:20,523 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -245969602, now seen corresponding path program 1 times [2024-11-28 04:11:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113287335] [2024-11-28 04:11:20,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:20,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113287335] [2024-11-28 04:11:20,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113287335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:20,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:20,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903374042] [2024-11-28 04:11:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:20,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:20,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:20,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:20,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:20,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 153 transitions, 1014 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:11:20,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:20,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:22,851 INFO L124 PetriNetUnfolderBase]: 3324/5604 cut-off events. [2024-11-28 04:11:22,851 INFO L125 PetriNetUnfolderBase]: For 4189/4189 co-relation queries the response was YES. [2024-11-28 04:11:22,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15271 conditions, 5604 events. 3324/5604 cut-off events. For 4189/4189 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 33342 event pairs, 2738 based on Foata normal form. 9/4599 useless extension candidates. Maximal degree in co-relation 15238. Up to 5179 conditions per place. [2024-11-28 04:11:22,876 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 162 selfloop transitions, 4 changer transitions 26/193 dead transitions. [2024-11-28 04:11:22,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 193 transitions, 1493 flow [2024-11-28 04:11:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-28 04:11:22,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-11-28 04:11:22,877 INFO L175 Difference]: Start difference. First operand has 138 places, 153 transitions, 1014 flow. Second operand 3 states and 129 transitions. [2024-11-28 04:11:22,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 193 transitions, 1493 flow [2024-11-28 04:11:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 193 transitions, 1487 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:11:22,893 INFO L231 Difference]: Finished difference. Result has 138 places, 151 transitions, 996 flow [2024-11-28 04:11:22,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=996, PETRI_PLACES=138, PETRI_TRANSITIONS=151} [2024-11-28 04:11:22,894 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-28 04:11:22,894 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 151 transitions, 996 flow [2024-11-28 04:11:22,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:11:22,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:22,894 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:22,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:11:22,895 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:22,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 982237066, now seen corresponding path program 2 times [2024-11-28 04:11:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372495799] [2024-11-28 04:11:22,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:22,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:22,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:22,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:23,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372495799] [2024-11-28 04:11:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372495799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13081020] [2024-11-28 04:11:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:23,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:23,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:23,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:23,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:23,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 151 transitions, 996 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:11:23,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:23,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:23,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:24,756 INFO L124 PetriNetUnfolderBase]: 3077/5183 cut-off events. [2024-11-28 04:11:24,756 INFO L125 PetriNetUnfolderBase]: For 4052/4052 co-relation queries the response was YES. [2024-11-28 04:11:24,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 5183 events. 3077/5183 cut-off events. For 4052/4052 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30342 event pairs, 1969 based on Foata normal form. 41/4255 useless extension candidates. Maximal degree in co-relation 13756. Up to 3524 conditions per place. [2024-11-28 04:11:24,804 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 156 selfloop transitions, 4 changer transitions 16/177 dead transitions. [2024-11-28 04:11:24,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 177 transitions, 1343 flow [2024-11-28 04:11:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-28 04:11:24,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-28 04:11:24,806 INFO L175 Difference]: Start difference. First operand has 138 places, 151 transitions, 996 flow. Second operand 3 states and 120 transitions. [2024-11-28 04:11:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 177 transitions, 1343 flow [2024-11-28 04:11:24,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 177 transitions, 1313 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-28 04:11:24,824 INFO L231 Difference]: Finished difference. Result has 134 places, 145 transitions, 902 flow [2024-11-28 04:11:24,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=902, PETRI_PLACES=134, PETRI_TRANSITIONS=145} [2024-11-28 04:11:24,825 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 64 predicate places. [2024-11-28 04:11:24,825 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 145 transitions, 902 flow [2024-11-28 04:11:24,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:11:24,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:24,830 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:24,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:11:24,831 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:24,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash 790117115, now seen corresponding path program 1 times [2024-11-28 04:11:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:24,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808798054] [2024-11-28 04:11:24,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808798054] [2024-11-28 04:11:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808798054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970586440] [2024-11-28 04:11:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:25,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:25,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:25,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 145 transitions, 902 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:25,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:25,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:25,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:26,845 INFO L124 PetriNetUnfolderBase]: 2855/4824 cut-off events. [2024-11-28 04:11:26,845 INFO L125 PetriNetUnfolderBase]: For 2270/2270 co-relation queries the response was YES. [2024-11-28 04:11:26,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12307 conditions, 4824 events. 2855/4824 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 27672 event pairs, 2431 based on Foata normal form. 1/4034 useless extension candidates. Maximal degree in co-relation 12275. Up to 4643 conditions per place. [2024-11-28 04:11:26,866 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 147 selfloop transitions, 1 changer transitions 19/168 dead transitions. [2024-11-28 04:11:26,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 168 transitions, 1287 flow [2024-11-28 04:11:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:11:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-28 04:11:26,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29521276595744683 [2024-11-28 04:11:26,868 INFO L175 Difference]: Start difference. First operand has 134 places, 145 transitions, 902 flow. Second operand 4 states and 111 transitions. [2024-11-28 04:11:26,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 168 transitions, 1287 flow [2024-11-28 04:11:26,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 168 transitions, 1279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:11:26,883 INFO L231 Difference]: Finished difference. Result has 134 places, 143 transitions, 879 flow [2024-11-28 04:11:26,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=879, PETRI_PLACES=134, PETRI_TRANSITIONS=143} [2024-11-28 04:11:26,884 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 64 predicate places. [2024-11-28 04:11:26,885 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 143 transitions, 879 flow [2024-11-28 04:11:26,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:26,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:26,885 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:26,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:11:26,885 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:26,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash -742648769, now seen corresponding path program 2 times [2024-11-28 04:11:26,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414952253] [2024-11-28 04:11:26,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:26,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:26,946 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:26,946 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:27,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414952253] [2024-11-28 04:11:27,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414952253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:27,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:27,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:27,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723473730] [2024-11-28 04:11:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:27,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:27,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:27,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:27,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:27,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:27,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 143 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:27,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:27,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:27,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:28,534 INFO L124 PetriNetUnfolderBase]: 2769/4666 cut-off events. [2024-11-28 04:11:28,534 INFO L125 PetriNetUnfolderBase]: For 2096/2096 co-relation queries the response was YES. [2024-11-28 04:11:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11811 conditions, 4666 events. 2769/4666 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26434 event pairs, 2369 based on Foata normal form. 1/3891 useless extension candidates. Maximal degree in co-relation 11778. Up to 4537 conditions per place. [2024-11-28 04:11:28,557 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 137 selfloop transitions, 0 changer transitions 22/160 dead transitions. [2024-11-28 04:11:28,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 1233 flow [2024-11-28 04:11:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:11:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-28 04:11:28,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2765957446808511 [2024-11-28 04:11:28,559 INFO L175 Difference]: Start difference. First operand has 134 places, 143 transitions, 879 flow. Second operand 4 states and 104 transitions. [2024-11-28 04:11:28,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 1233 flow [2024-11-28 04:11:28,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 1230 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 04:11:28,569 INFO L231 Difference]: Finished difference. Result has 135 places, 138 transitions, 852 flow [2024-11-28 04:11:28,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=135, PETRI_TRANSITIONS=138} [2024-11-28 04:11:28,570 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-28 04:11:28,570 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 138 transitions, 852 flow [2024-11-28 04:11:28,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:28,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:28,571 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:28,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:11:28,571 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:28,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:28,572 INFO L85 PathProgramCache]: Analyzing trace with hash 464797896, now seen corresponding path program 1 times [2024-11-28 04:11:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:28,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086770385] [2024-11-28 04:11:28,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086770385] [2024-11-28 04:11:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086770385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939197707] [2024-11-28 04:11:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:28,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:28,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:28,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:28,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:28,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 852 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:28,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:28,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:30,217 INFO L124 PetriNetUnfolderBase]: 2393/4045 cut-off events. [2024-11-28 04:11:30,217 INFO L125 PetriNetUnfolderBase]: For 1889/1889 co-relation queries the response was YES. [2024-11-28 04:11:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 4045 events. 2393/4045 cut-off events. For 1889/1889 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 22125 event pairs, 1998 based on Foata normal form. 1/3455 useless extension candidates. Maximal degree in co-relation 10242. Up to 3877 conditions per place. [2024-11-28 04:11:30,236 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 140 selfloop transitions, 1 changer transitions 18/160 dead transitions. [2024-11-28 04:11:30,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 160 transitions, 1221 flow [2024-11-28 04:11:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:11:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-28 04:11:30,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27925531914893614 [2024-11-28 04:11:30,238 INFO L175 Difference]: Start difference. First operand has 135 places, 138 transitions, 852 flow. Second operand 4 states and 105 transitions. [2024-11-28 04:11:30,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 160 transitions, 1221 flow [2024-11-28 04:11:30,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 160 transitions, 1213 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 04:11:30,245 INFO L231 Difference]: Finished difference. Result has 130 places, 136 transitions, 834 flow [2024-11-28 04:11:30,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=130, PETRI_TRANSITIONS=136} [2024-11-28 04:11:30,245 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-28 04:11:30,246 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 136 transitions, 834 flow [2024-11-28 04:11:30,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:30,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:30,246 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:30,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:11:30,246 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:30,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:30,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2095381524, now seen corresponding path program 2 times [2024-11-28 04:11:30,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:30,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410644683] [2024-11-28 04:11:30,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:11:30,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:30,307 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:11:30,307 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:11:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:30,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410644683] [2024-11-28 04:11:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410644683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:30,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470133143] [2024-11-28 04:11:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:30,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:30,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:30,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:30,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:30,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:30,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 136 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:30,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:30,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:30,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:31,709 INFO L124 PetriNetUnfolderBase]: 2314/3899 cut-off events. [2024-11-28 04:11:31,709 INFO L125 PetriNetUnfolderBase]: For 1608/1608 co-relation queries the response was YES. [2024-11-28 04:11:31,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 3899 events. 2314/3899 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20986 event pairs, 1948 based on Foata normal form. 1/3319 useless extension candidates. Maximal degree in co-relation 9793. Up to 3791 conditions per place. [2024-11-28 04:11:31,725 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 126 selfloop transitions, 0 changer transitions 24/151 dead transitions. [2024-11-28 04:11:31,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 151 transitions, 1166 flow [2024-11-28 04:11:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:11:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-28 04:11:31,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2579787234042553 [2024-11-28 04:11:31,726 INFO L175 Difference]: Start difference. First operand has 130 places, 136 transitions, 834 flow. Second operand 4 states and 97 transitions. [2024-11-28 04:11:31,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 151 transitions, 1166 flow [2024-11-28 04:11:31,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 151 transitions, 1161 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 04:11:31,737 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 800 flow [2024-11-28 04:11:31,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=800, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-11-28 04:11:31,738 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2024-11-28 04:11:31,738 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 800 flow [2024-11-28 04:11:31,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:11:31,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:31,739 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:31,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:11:31,739 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:31,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -576543863, now seen corresponding path program 1 times [2024-11-28 04:11:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775377968] [2024-11-28 04:11:31,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 04:11:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775377968] [2024-11-28 04:11:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775377968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:11:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549997428] [2024-11-28 04:11:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:32,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:32,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:32,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:11:32,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-28 04:11:32,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 800 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:11:32,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:11:32,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-28 04:11:32,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:11:33,080 INFO L124 PetriNetUnfolderBase]: 1681/2865 cut-off events. [2024-11-28 04:11:33,080 INFO L125 PetriNetUnfolderBase]: For 1277/1277 co-relation queries the response was YES. [2024-11-28 04:11:33,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7296 conditions, 2865 events. 1681/2865 cut-off events. For 1277/1277 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 14174 event pairs, 1229 based on Foata normal form. 34/2498 useless extension candidates. Maximal degree in co-relation 7263. Up to 2418 conditions per place. [2024-11-28 04:11:33,092 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 143 selfloop transitions, 3 changer transitions 2/149 dead transitions. [2024-11-28 04:11:33,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 149 transitions, 1153 flow [2024-11-28 04:11:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:11:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-28 04:11:33,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32978723404255317 [2024-11-28 04:11:33,093 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 800 flow. Second operand 3 states and 93 transitions. [2024-11-28 04:11:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 149 transitions, 1153 flow [2024-11-28 04:11:33,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 149 transitions, 1147 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:11:33,101 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 809 flow [2024-11-28 04:11:33,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=809, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-11-28 04:11:33,101 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 50 predicate places. [2024-11-28 04:11:33,101 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 809 flow [2024-11-28 04:11:33,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 04:11:33,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:11:33,102 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:33,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:11:33,102 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:11:33,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:33,103 INFO L85 PathProgramCache]: Analyzing trace with hash 333754834, now seen corresponding path program 1 times [2024-11-28 04:11:33,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:33,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836112125] [2024-11-28 04:11:33,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:33,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-28 04:11:41,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836112125] [2024-11-28 04:11:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836112125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638525454] [2024-11-28 04:11:41,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:41,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:41,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:41,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_030c4d1d-8465-4c5d-895c-710f0605cf13/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:11:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:42,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:11:42,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:49,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:11:49,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 223 treesize of output 1152 [2024-11-28 04:12:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 04:12:13,501 INFO L312 TraceCheckSpWp]: Computing backward predicates...