./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX --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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:09:03,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:09:04,060 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:09:04,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:09:04,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:09:04,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:09:04,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:09:04,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:09:04,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:09:04,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:09:04,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:09:04,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:09:04,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:09:04,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:09:04,121 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:09:04,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:09:04,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:09:04,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:09:04,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:09:04,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:09:04,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:09:04,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:09:04,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:09:04,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:09:04,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:09:04,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:09:04,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:09:04,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:09:04,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:09:04,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:09:04,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:09:04,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:09:04,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:04,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:09:04,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:09:04,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:09:04,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:09:04,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:09:04,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:09:04,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:09:04,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:09:04,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:09:04,139 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-08 17:09:04,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:09:04,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:09:04,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:09:04,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:09:04,476 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:09:04,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c Unable to find full path for "g++" [2024-11-08 17:09:06,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:09:06,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:09:06,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-08 17:09:06,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/data/ca071c68f/bf54a76a79564f6087e6094b02cfc64e/FLAG5382f0eb5 [2024-11-08 17:09:06,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/data/ca071c68f/bf54a76a79564f6087e6094b02cfc64e [2024-11-08 17:09:06,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:09:06,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:09:06,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:06,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:09:06,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:09:06,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:06" (1/1) ... [2024-11-08 17:09:06,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616ef23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:06, skipping insertion in model container [2024-11-08 17:09:06,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:09:06" (1/1) ... [2024-11-08 17:09:06,851 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:09:07,083 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_77ec17d7-27dd-42c8-98d9-6961b4fc1984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-08 17:09:07,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:07,105 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:09:07,143 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_77ec17d7-27dd-42c8-98d9-6961b4fc1984/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-08 17:09:07,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:09:07,172 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:09:07,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07 WrapperNode [2024-11-08 17:09:07,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:09:07,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:07,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:09:07,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:09:07,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,236 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 331 [2024-11-08 17:09:07,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:09:07,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:09:07,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:09:07,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:09:07,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,275 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 17:09:07,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:09:07,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:09:07,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:09:07,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:09:07,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (1/1) ... [2024-11-08 17:09:07,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:09:07,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:07,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:09:07,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:09:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:09:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:09:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:09:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:09:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:09:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:09:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:09:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:09:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:09:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:09:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:09:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:09:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:09:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:09:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:09:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:09:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:09:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:09:07,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:09:07,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:09:07,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:09:08,130 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:09:08,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:09:08,559 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:09:08,559 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:09:08,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:08 BoogieIcfgContainer [2024-11-08 17:09:08,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:09:08,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:09:08,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:09:08,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:09:08,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:09:06" (1/3) ... [2024-11-08 17:09:08,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306f4fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:08, skipping insertion in model container [2024-11-08 17:09:08,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:09:07" (2/3) ... [2024-11-08 17:09:08,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306f4fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:09:08, skipping insertion in model container [2024-11-08 17:09:08,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:09:08" (3/3) ... [2024-11-08 17:09:08,573 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-08 17:09:08,595 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:09:08,595 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:09:08,595 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:09:08,669 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:09:08,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 70 transitions, 161 flow [2024-11-08 17:09:08,764 INFO L124 PetriNetUnfolderBase]: 20/67 cut-off events. [2024-11-08 17:09:08,765 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:09:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 20/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 128 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2024-11-08 17:09:08,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 70 transitions, 161 flow [2024-11-08 17:09:08,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 66 transitions, 150 flow [2024-11-08 17:09:08,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:09:08,791 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;@40561591, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:09:08,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:09:08,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:09:08,823 INFO L124 PetriNetUnfolderBase]: 20/65 cut-off events. [2024-11-08 17:09:08,823 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:09:08,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:08,824 INFO L204 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] [2024-11-08 17:09:08,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:08,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash 447983076, now seen corresponding path program 1 times [2024-11-08 17:09:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:08,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034803690] [2024-11-08 17:09:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034803690] [2024-11-08 17:09:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034803690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063224886] [2024-11-08 17:09:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:09,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:09:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:09:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:09:09,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-08 17:09:09,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:09,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:09,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-08 17:09:09,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:09,604 INFO L124 PetriNetUnfolderBase]: 1167/1721 cut-off events. [2024-11-08 17:09:09,604 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-08 17:09:09,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 1721 events. 1167/1721 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6848 event pairs, 608 based on Foata normal form. 0/1338 useless extension candidates. Maximal degree in co-relation 3006. Up to 1448 conditions per place. [2024-11-08 17:09:09,624 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 37 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2024-11-08 17:09:09,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 218 flow [2024-11-08 17:09:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:09:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:09:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-11-08 17:09:09,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-08 17:09:09,639 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 150 flow. Second operand 2 states and 98 transitions. [2024-11-08 17:09:09,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 218 flow [2024-11-08 17:09:09,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:09:09,654 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 132 flow [2024-11-08 17:09:09,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2024-11-08 17:09:09,663 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-08 17:09:09,663 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 132 flow [2024-11-08 17:09:09,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:09,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:09,664 INFO L204 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] [2024-11-08 17:09:09,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:09:09,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:09,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 445154676, now seen corresponding path program 1 times [2024-11-08 17:09:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330150342] [2024-11-08 17:09:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:10,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330150342] [2024-11-08 17:09:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330150342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:10,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:10,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031463173] [2024-11-08 17:09:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:10,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:10,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-08 17:09:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-08 17:09:10,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:10,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-08 17:09:10,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:10,572 INFO L124 PetriNetUnfolderBase]: 2343/3675 cut-off events. [2024-11-08 17:09:10,573 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-08 17:09:10,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 3675 events. 2343/3675 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18536 event pairs, 608 based on Foata normal form. 1/2850 useless extension candidates. Maximal degree in co-relation 6621. Up to 1685 conditions per place. [2024-11-08 17:09:10,600 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 59 selfloop transitions, 5 changer transitions 1/91 dead transitions. [2024-11-08 17:09:10,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 323 flow [2024-11-08 17:09:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-08 17:09:10,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-08 17:09:10,603 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 132 flow. Second operand 3 states and 153 transitions. [2024-11-08 17:09:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 323 flow [2024-11-08 17:09:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 91 transitions, 323 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:09:10,608 INFO L231 Difference]: Finished difference. Result has 54 places, 67 transitions, 165 flow [2024-11-08 17:09:10,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=54, PETRI_TRANSITIONS=67} [2024-11-08 17:09:10,609 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-08 17:09:10,609 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 67 transitions, 165 flow [2024-11-08 17:09:10,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-08 17:09:10,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:10,610 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:10,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:09:10,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:10,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1442674043, now seen corresponding path program 1 times [2024-11-08 17:09:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139227714] [2024-11-08 17:09:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:10,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:10,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139227714] [2024-11-08 17:09:10,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139227714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:10,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:10,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:10,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616223010] [2024-11-08 17:09:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:10,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:10,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:10,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-08 17:09:10,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 67 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-08 17:09:10,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:10,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-08 17:09:10,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:11,774 INFO L124 PetriNetUnfolderBase]: 4515/7163 cut-off events. [2024-11-08 17:09:11,775 INFO L125 PetriNetUnfolderBase]: For 1020/1020 co-relation queries the response was YES. [2024-11-08 17:09:11,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14199 conditions, 7163 events. 4515/7163 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 41357 event pairs, 1277 based on Foata normal form. 120/5668 useless extension candidates. Maximal degree in co-relation 14194. Up to 3002 conditions per place. [2024-11-08 17:09:11,828 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-11-08 17:09:11,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 393 flow [2024-11-08 17:09:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-08 17:09:11,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-08 17:09:11,834 INFO L175 Difference]: Start difference. First operand has 54 places, 67 transitions, 165 flow. Second operand 3 states and 153 transitions. [2024-11-08 17:09:11,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 393 flow [2024-11-08 17:09:11,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:09:11,840 INFO L231 Difference]: Finished difference. Result has 56 places, 68 transitions, 174 flow [2024-11-08 17:09:11,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=68} [2024-11-08 17:09:11,843 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-08 17:09:11,844 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 68 transitions, 174 flow [2024-11-08 17:09:11,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-08 17:09:11,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:11,845 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:11,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:09:11,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:11,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1425000271, now seen corresponding path program 1 times [2024-11-08 17:09:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212053524] [2024-11-08 17:09:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212053524] [2024-11-08 17:09:12,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212053524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:12,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:12,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613876562] [2024-11-08 17:09:12,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:12,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:12,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-08 17:09:12,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-08 17:09:12,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:12,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-08 17:09:12,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:13,654 INFO L124 PetriNetUnfolderBase]: 8337/12633 cut-off events. [2024-11-08 17:09:13,654 INFO L125 PetriNetUnfolderBase]: For 2802/2802 co-relation queries the response was YES. [2024-11-08 17:09:13,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25437 conditions, 12633 events. 8337/12633 cut-off events. For 2802/2802 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 75122 event pairs, 2876 based on Foata normal form. 440/10331 useless extension candidates. Maximal degree in co-relation 25431. Up to 5995 conditions per place. [2024-11-08 17:09:13,729 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-08 17:09:13,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 96 transitions, 393 flow [2024-11-08 17:09:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-08 17:09:13,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2024-11-08 17:09:13,731 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 174 flow. Second operand 3 states and 151 transitions. [2024-11-08 17:09:13,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 96 transitions, 393 flow [2024-11-08 17:09:13,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:09:13,735 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 197 flow [2024-11-08 17:09:13,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2024-11-08 17:09:13,736 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-08 17:09:13,736 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 197 flow [2024-11-08 17:09:13,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-08 17:09:13,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:13,737 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:13,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:09:13,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:13,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1922966756, now seen corresponding path program 1 times [2024-11-08 17:09:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:13,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140515544] [2024-11-08 17:09:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140515544] [2024-11-08 17:09:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140515544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:13,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994710292] [2024-11-08 17:09:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:13,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:13,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-08 17:09:13,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-08 17:09:13,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:13,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-08 17:09:13,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:15,813 INFO L124 PetriNetUnfolderBase]: 13277/19050 cut-off events. [2024-11-08 17:09:15,814 INFO L125 PetriNetUnfolderBase]: For 6491/6505 co-relation queries the response was YES. [2024-11-08 17:09:15,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42163 conditions, 19050 events. 13277/19050 cut-off events. For 6491/6505 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 108427 event pairs, 5962 based on Foata normal form. 0/15522 useless extension candidates. Maximal degree in co-relation 42156. Up to 10586 conditions per place. [2024-11-08 17:09:16,003 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 69 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-08 17:09:16,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 438 flow [2024-11-08 17:09:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-08 17:09:16,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2024-11-08 17:09:16,005 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 197 flow. Second operand 3 states and 143 transitions. [2024-11-08 17:09:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 438 flow [2024-11-08 17:09:16,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:09:16,014 INFO L231 Difference]: Finished difference. Result has 61 places, 71 transitions, 224 flow [2024-11-08 17:09:16,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=71} [2024-11-08 17:09:16,015 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-11-08 17:09:16,017 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 224 flow [2024-11-08 17:09:16,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-08 17:09:16,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:16,017 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:16,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:09:16,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:16,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash -770463870, now seen corresponding path program 1 times [2024-11-08 17:09:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899997125] [2024-11-08 17:09:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:16,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:16,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899997125] [2024-11-08 17:09:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899997125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:16,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:16,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244260343] [2024-11-08 17:09:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:16,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:09:16,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:09:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:09:16,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-08 17:09:16,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-08 17:09:16,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:16,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-08 17:09:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:18,005 INFO L124 PetriNetUnfolderBase]: 12910/19880 cut-off events. [2024-11-08 17:09:18,005 INFO L125 PetriNetUnfolderBase]: For 9322/9500 co-relation queries the response was YES. [2024-11-08 17:09:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43854 conditions, 19880 events. 12910/19880 cut-off events. For 9322/9500 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 127357 event pairs, 9082 based on Foata normal form. 318/16400 useless extension candidates. Maximal degree in co-relation 43846. Up to 13555 conditions per place. [2024-11-08 17:09:18,112 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 84 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-08 17:09:18,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 500 flow [2024-11-08 17:09:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:09:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:09:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-08 17:09:18,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5628571428571428 [2024-11-08 17:09:18,114 INFO L175 Difference]: Start difference. First operand has 61 places, 71 transitions, 224 flow. Second operand 5 states and 197 transitions. [2024-11-08 17:09:18,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 500 flow [2024-11-08 17:09:18,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:18,143 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 250 flow [2024-11-08 17:09:18,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2024-11-08 17:09:18,144 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-11-08 17:09:18,145 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 250 flow [2024-11-08 17:09:18,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-08 17:09:18,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:18,145 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:18,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:09:18,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:18,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2137490185, now seen corresponding path program 1 times [2024-11-08 17:09:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:18,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832627228] [2024-11-08 17:09:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:09:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:18,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832627228] [2024-11-08 17:09:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832627228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970260065] [2024-11-08 17:09:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:18,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 70 [2024-11-08 17:09:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 17:09:18,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:18,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 70 [2024-11-08 17:09:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:20,118 INFO L124 PetriNetUnfolderBase]: 13376/19486 cut-off events. [2024-11-08 17:09:20,119 INFO L125 PetriNetUnfolderBase]: For 5478/5802 co-relation queries the response was YES. [2024-11-08 17:09:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42986 conditions, 19486 events. 13376/19486 cut-off events. For 5478/5802 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 104832 event pairs, 5854 based on Foata normal form. 20/16344 useless extension candidates. Maximal degree in co-relation 42975. Up to 10040 conditions per place. [2024-11-08 17:09:20,214 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 67 selfloop transitions, 5 changer transitions 3/97 dead transitions. [2024-11-08 17:09:20,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 452 flow [2024-11-08 17:09:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-08 17:09:20,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2024-11-08 17:09:20,215 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 250 flow. Second operand 3 states and 139 transitions. [2024-11-08 17:09:20,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 452 flow [2024-11-08 17:09:20,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:09:20,221 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 244 flow [2024-11-08 17:09:20,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-08 17:09:20,222 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-11-08 17:09:20,222 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 244 flow [2024-11-08 17:09:20,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 17:09:20,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:20,223 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-08 17:09:20,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:09:20,223 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:20,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:20,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2060178163, now seen corresponding path program 1 times [2024-11-08 17:09:20,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:20,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331908694] [2024-11-08 17:09:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331908694] [2024-11-08 17:09:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331908694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162102679] [2024-11-08 17:09:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:21,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:21,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:09:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:21,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:09:21,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:21,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:09:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:22,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:22,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-08 17:09:22,956 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:09:22,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-08 17:09:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162102679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:23,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2024-11-08 17:09:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133249270] [2024-11-08 17:09:23,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:23,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:09:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:09:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:09:23,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-11-08 17:09:23,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 244 flow. Second operand has 25 states, 25 states have (on average 24.08) internal successors, (602), 25 states have internal predecessors, (602), 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) [2024-11-08 17:09:23,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:23,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-11-08 17:09:23,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:34,196 INFO L124 PetriNetUnfolderBase]: 58812/89577 cut-off events. [2024-11-08 17:09:34,196 INFO L125 PetriNetUnfolderBase]: For 53719/56680 co-relation queries the response was YES. [2024-11-08 17:09:34,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207232 conditions, 89577 events. 58812/89577 cut-off events. For 53719/56680 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 668128 event pairs, 4745 based on Foata normal form. 60/72073 useless extension candidates. Maximal degree in co-relation 207220. Up to 12293 conditions per place. [2024-11-08 17:09:34,964 INFO L140 encePairwiseOnDemand]: 43/70 looper letters, 342 selfloop transitions, 89 changer transitions 7/457 dead transitions. [2024-11-08 17:09:34,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 457 transitions, 2334 flow [2024-11-08 17:09:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:09:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 17:09:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 966 transitions. [2024-11-08 17:09:34,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-08 17:09:34,968 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 244 flow. Second operand 27 states and 966 transitions. [2024-11-08 17:09:34,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 457 transitions, 2334 flow [2024-11-08 17:09:35,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 457 transitions, 2260 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-08 17:09:35,014 INFO L231 Difference]: Finished difference. Result has 105 places, 158 transitions, 1022 flow [2024-11-08 17:09:35,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1022, PETRI_PLACES=105, PETRI_TRANSITIONS=158} [2024-11-08 17:09:35,015 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-11-08 17:09:35,015 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 158 transitions, 1022 flow [2024-11-08 17:09:35,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 24.08) internal successors, (602), 25 states have internal predecessors, (602), 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) [2024-11-08 17:09:35,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:35,016 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-08 17:09:35,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:09:35,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77ec17d7-27dd-42c8-98d9-6961b4fc1984/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:35,217 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:35,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1568757426, now seen corresponding path program 1 times [2024-11-08 17:09:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190971402] [2024-11-08 17:09:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:09:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190971402] [2024-11-08 17:09:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190971402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:35,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:35,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901447234] [2024-11-08 17:09:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:35,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:35,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-08 17:09:35,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 158 transitions, 1022 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:35,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:35,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-08 17:09:35,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:09:48,662 INFO L124 PetriNetUnfolderBase]: 66134/103709 cut-off events. [2024-11-08 17:09:48,663 INFO L125 PetriNetUnfolderBase]: For 296089/300973 co-relation queries the response was YES. [2024-11-08 17:09:49,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334811 conditions, 103709 events. 66134/103709 cut-off events. For 296089/300973 co-relation queries the response was YES. Maximal size of possible extension queue 2022. Compared 813801 event pairs, 18869 based on Foata normal form. 1098/83284 useless extension candidates. Maximal degree in co-relation 334785. Up to 52439 conditions per place. [2024-11-08 17:09:49,681 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 156 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2024-11-08 17:09:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 199 transitions, 1622 flow [2024-11-08 17:09:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:09:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-08 17:09:49,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2024-11-08 17:09:49,683 INFO L175 Difference]: Start difference. First operand has 105 places, 158 transitions, 1022 flow. Second operand 3 states and 151 transitions. [2024-11-08 17:09:49,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 199 transitions, 1622 flow [2024-11-08 17:09:56,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 199 transitions, 1532 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-11-08 17:09:56,110 INFO L231 Difference]: Finished difference. Result has 104 places, 151 transitions, 909 flow [2024-11-08 17:09:56,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=909, PETRI_PLACES=104, PETRI_TRANSITIONS=151} [2024-11-08 17:09:56,112 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-11-08 17:09:56,112 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 151 transitions, 909 flow [2024-11-08 17:09:56,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:56,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:09:56,113 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-11-08 17:09:56,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:09:56,113 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:09:56,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1502346857, now seen corresponding path program 1 times [2024-11-08 17:09:56,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:56,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457995621] [2024-11-08 17:09:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:56,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:09:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457995621] [2024-11-08 17:09:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457995621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:56,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:56,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:09:56,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898903315] [2024-11-08 17:09:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:56,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:56,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-08 17:09:56,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 151 transitions, 909 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-08 17:09:56,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:09:56,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-08 17:09:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand