./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.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_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/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_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/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_0a80e3d7-834d-42ea-907b-81de39b97b3a/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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:37:07,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:37:08,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:37:08,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:37:08,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:37:08,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:37:08,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:37:08,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:37:08,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:37:08,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:37:08,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:37:08,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:37:08,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:37:08,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:37:08,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:37:08,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:37:08,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:37:08,106 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:37:08,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:37:08,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:37:08,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:37:08,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:37:08,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:37:08,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:37:08,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:37:08,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:37:08,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:37:08,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:37:08,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:37:08,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:37:08,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:37:08,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:37:08,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:37:08,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:37:08,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:37:08,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:37:08,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:37:08,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:37:08,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:37:08,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:37:08,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:37:08,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:37:08,122 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_0a80e3d7-834d-42ea-907b-81de39b97b3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-08 17:37:08,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:37:08,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:37:08,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:37:08,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:37:08,491 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:37:08,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c Unable to find full path for "g++" [2024-11-08 17:37:10,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:37:11,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:37:11,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-08 17:37:11,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/data/b0ecf519e/028963d072d042fab1e5fd26ccf242f2/FLAG94dbceebf [2024-11-08 17:37:11,295 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/data/b0ecf519e/028963d072d042fab1e5fd26ccf242f2 [2024-11-08 17:37:11,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:37:11,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:37:11,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:37:11,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:37:11,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:37:11,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686ebaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11, skipping insertion in model container [2024-11-08 17:37:11,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:37:11,687 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_0a80e3d7-834d-42ea-907b-81de39b97b3a/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-08 17:37:11,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:37:11,715 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:37:11,749 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_0a80e3d7-834d-42ea-907b-81de39b97b3a/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2904,2917] [2024-11-08 17:37:11,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:37:11,782 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:37:11,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11 WrapperNode [2024-11-08 17:37:11,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:37:11,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:37:11,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:37:11,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:37:11,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,865 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 264 [2024-11-08 17:37:11,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:37:11,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:37:11,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:37:11,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:37:11,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,914 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 2 writes are split as follows [0, 2]. [2024-11-08 17:37:11,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:37:11,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:37:11,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:37:11,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:37:11,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (1/1) ... [2024-11-08 17:37:11,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:37:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:11,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:37:12,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:37:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:37:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:37:12,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:37:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:37:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:37:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:37:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:37:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:37:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:37:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:37:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:37:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:37:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:37:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:37:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:37:12,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:37:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:37:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:37:12,065 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 17:37:12,208 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:37:12,210 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:37:12,872 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:37:12,873 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:37:13,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:37:13,499 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:37:13,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:13 BoogieIcfgContainer [2024-11-08 17:37:13,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:37:13,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:37:13,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:37:13,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:37:13,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:37:11" (1/3) ... [2024-11-08 17:37:13,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237333db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:13, skipping insertion in model container [2024-11-08 17:37:13,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:11" (2/3) ... [2024-11-08 17:37:13,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237333db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:13, skipping insertion in model container [2024-11-08 17:37:13,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:13" (3/3) ... [2024-11-08 17:37:13,519 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-08 17:37:13,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:37:13,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:37:13,547 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:37:13,639 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:37:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 65 transitions, 151 flow [2024-11-08 17:37:13,732 INFO L124 PetriNetUnfolderBase]: 16/62 cut-off events. [2024-11-08 17:37:13,732 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:37:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 16/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-08 17:37:13,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 65 transitions, 151 flow [2024-11-08 17:37:13,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 61 transitions, 140 flow [2024-11-08 17:37:13,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:37:13,773 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;@52c65689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:37:13,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:37:13,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:37:13,809 INFO L124 PetriNetUnfolderBase]: 16/60 cut-off events. [2024-11-08 17:37:13,809 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:37:13,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:13,810 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] [2024-11-08 17:37:13,814 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 17:37:13,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 655362359, now seen corresponding path program 1 times [2024-11-08 17:37:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350358896] [2024-11-08 17:37:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:14,603 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 17:37:14,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350358896] [2024-11-08 17:37:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350358896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:14,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:37:14,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471281491] [2024-11-08 17:37:14,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:14,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:37:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:37:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:37:14,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 65 [2024-11-08 17:37:14,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 17:37:14,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:14,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 65 [2024-11-08 17:37:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:15,970 INFO L124 PetriNetUnfolderBase]: 4018/5813 cut-off events. [2024-11-08 17:37:15,970 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-08 17:37:15,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11454 conditions, 5813 events. 4018/5813 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 31962 event pairs, 1062 based on Foata normal form. 595/5597 useless extension candidates. Maximal degree in co-relation 10694. Up to 3464 conditions per place. [2024-11-08 17:37:16,038 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 63 selfloop transitions, 4 changer transitions 1/87 dead transitions. [2024-11-08 17:37:16,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 343 flow [2024-11-08 17:37:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:37:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:37:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-08 17:37:16,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2024-11-08 17:37:16,063 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 140 flow. Second operand 3 states and 141 transitions. [2024-11-08 17:37:16,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 343 flow [2024-11-08 17:37:16,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 321 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:37:16,097 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 148 flow [2024-11-08 17:37:16,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-11-08 17:37:16,107 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2024-11-08 17:37:16,107 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 148 flow [2024-11-08 17:37:16,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 17:37:16,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:16,109 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, 1, 1] [2024-11-08 17:37:16,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:37:16,110 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 17:37:16,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash 147698901, now seen corresponding path program 1 times [2024-11-08 17:37:16,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988222583] [2024-11-08 17:37:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:37:16,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988222583] [2024-11-08 17:37:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988222583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:16,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:16,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:37:16,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928971560] [2024-11-08 17:37:16,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:16,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:16,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:16,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-11-08 17:37:16,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 17:37:16,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:16,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-11-08 17:37:16,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:17,613 INFO L124 PetriNetUnfolderBase]: 4022/5825 cut-off events. [2024-11-08 17:37:17,614 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-11-08 17:37:17,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12133 conditions, 5825 events. 4022/5825 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32187 event pairs, 2711 based on Foata normal form. 2/5007 useless extension candidates. Maximal degree in co-relation 4032. Up to 5347 conditions per place. [2024-11-08 17:37:17,731 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 45 selfloop transitions, 2 changer transitions 9/71 dead transitions. [2024-11-08 17:37:17,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 280 flow [2024-11-08 17:37:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:37:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:37:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-08 17:37:17,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-11-08 17:37:17,735 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 148 flow. Second operand 5 states and 145 transitions. [2024-11-08 17:37:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 280 flow [2024-11-08 17:37:17,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:17,741 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 164 flow [2024-11-08 17:37:17,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2024-11-08 17:37:17,742 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-08 17:37:17,742 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 164 flow [2024-11-08 17:37:17,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 17:37:17,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:17,743 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, 1, 1, 1, 1] [2024-11-08 17:37:17,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:37:17,744 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 17:37:17,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 411870139, now seen corresponding path program 1 times [2024-11-08 17:37:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071836266] [2024-11-08 17:37:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:37:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071836266] [2024-11-08 17:37:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071836266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:37:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21675330] [2024-11-08 17:37:17,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:17,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:17,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-08 17:37:17,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 17:37:17,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:17,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-08 17:37:17,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:19,274 INFO L124 PetriNetUnfolderBase]: 5480/7773 cut-off events. [2024-11-08 17:37:19,274 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-11-08 17:37:19,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16056 conditions, 7773 events. 5480/7773 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 43321 event pairs, 1713 based on Foata normal form. 0/6778 useless extension candidates. Maximal degree in co-relation 16040. Up to 4216 conditions per place. [2024-11-08 17:37:19,358 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 63 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-08 17:37:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 350 flow [2024-11-08 17:37:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:37:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:37:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-08 17:37:19,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346153846153846 [2024-11-08 17:37:19,368 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 164 flow. Second operand 4 states and 139 transitions. [2024-11-08 17:37:19,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 350 flow [2024-11-08 17:37:19,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 342 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 17:37:19,375 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 175 flow [2024-11-08 17:37:19,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2024-11-08 17:37:19,376 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-08 17:37:19,378 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 175 flow [2024-11-08 17:37:19,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 17:37:19,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:19,379 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, 1, 1, 1, 1] [2024-11-08 17:37:19,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:37:19,380 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 17:37:19,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1566262387, now seen corresponding path program 1 times [2024-11-08 17:37:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137301647] [2024-11-08 17:37:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:37:19,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137301647] [2024-11-08 17:37:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137301647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576529353] [2024-11-08 17:37:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:19,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:19,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:19,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:37:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:19,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:37:19,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:37:19,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:37:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576529353] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:37:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-08 17:37:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462184476] [2024-11-08 17:37:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:20,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:37:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:37:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:37:20,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2024-11-08 17:37:20,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 17:37:20,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:20,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2024-11-08 17:37:20,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:21,557 INFO L124 PetriNetUnfolderBase]: 6254/9312 cut-off events. [2024-11-08 17:37:21,557 INFO L125 PetriNetUnfolderBase]: For 1648/1648 co-relation queries the response was YES. [2024-11-08 17:37:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20584 conditions, 9312 events. 6254/9312 cut-off events. For 1648/1648 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 54575 event pairs, 2832 based on Foata normal form. 0/8218 useless extension candidates. Maximal degree in co-relation 20557. Up to 5050 conditions per place. [2024-11-08 17:37:21,634 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 71 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-08 17:37:21,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 393 flow [2024-11-08 17:37:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:37:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:37:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-08 17:37:21,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42153846153846153 [2024-11-08 17:37:21,636 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 175 flow. Second operand 5 states and 137 transitions. [2024-11-08 17:37:21,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 393 flow [2024-11-08 17:37:21,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 387 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:37:21,673 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 198 flow [2024-11-08 17:37:21,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-08 17:37:21,675 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-11-08 17:37:21,675 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 198 flow [2024-11-08 17:37:21,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 17:37:21,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:21,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:21,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:37:21,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:21,877 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 17:37:21,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash 863904419, now seen corresponding path program 1 times [2024-11-08 17:37:21,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:21,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940824823] [2024-11-08 17:37:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:22,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940824823] [2024-11-08 17:37:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940824823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:22,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:22,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:37:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389007361] [2024-11-08 17:37:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:22,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:37:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:37:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:37:22,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2024-11-08 17:37:22,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 17:37:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2024-11-08 17:37:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:24,961 INFO L124 PetriNetUnfolderBase]: 9790/14771 cut-off events. [2024-11-08 17:37:24,961 INFO L125 PetriNetUnfolderBase]: For 4349/4349 co-relation queries the response was YES. [2024-11-08 17:37:25,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33796 conditions, 14771 events. 9790/14771 cut-off events. For 4349/4349 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 96693 event pairs, 5933 based on Foata normal form. 0/13457 useless extension candidates. Maximal degree in co-relation 33770. Up to 7599 conditions per place. [2024-11-08 17:37:25,090 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 123 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2024-11-08 17:37:25,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 147 transitions, 694 flow [2024-11-08 17:37:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:37:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:37:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-11-08 17:37:25,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318681318681319 [2024-11-08 17:37:25,093 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 198 flow. Second operand 7 states and 242 transitions. [2024-11-08 17:37:25,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 147 transitions, 694 flow [2024-11-08 17:37:25,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 147 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:37:25,185 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 267 flow [2024-11-08 17:37:25,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-11-08 17:37:25,188 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-11-08 17:37:25,189 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 267 flow [2024-11-08 17:37:25,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 17:37:25,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:25,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:25,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:37:25,191 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 17:37:25,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1400817245, now seen corresponding path program 1 times [2024-11-08 17:37:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944551019] [2024-11-08 17:37:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944551019] [2024-11-08 17:37:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944551019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:25,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:25,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:37:25,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637943414] [2024-11-08 17:37:25,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:25,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:37:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:37:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:37:25,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2024-11-08 17:37:25,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 17:37:25,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:25,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2024-11-08 17:37:25,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:28,111 INFO L124 PetriNetUnfolderBase]: 8790/13231 cut-off events. [2024-11-08 17:37:28,112 INFO L125 PetriNetUnfolderBase]: For 7328/7519 co-relation queries the response was YES. [2024-11-08 17:37:28,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32524 conditions, 13231 events. 8790/13231 cut-off events. For 7328/7519 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 84509 event pairs, 5542 based on Foata normal form. 191/12318 useless extension candidates. Maximal degree in co-relation 32493. Up to 7566 conditions per place. [2024-11-08 17:37:28,232 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 107 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-11-08 17:37:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 132 transitions, 690 flow [2024-11-08 17:37:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:37:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:37:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-11-08 17:37:28,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5032967032967033 [2024-11-08 17:37:28,235 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 267 flow. Second operand 7 states and 229 transitions. [2024-11-08 17:37:28,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 132 transitions, 690 flow [2024-11-08 17:37:28,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 132 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:28,264 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 313 flow [2024-11-08 17:37:28,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-08 17:37:28,265 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-11-08 17:37:28,266 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 313 flow [2024-11-08 17:37:28,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 17:37:28,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:28,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:28,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:37:28,267 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 17:37:28,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash 421802525, now seen corresponding path program 1 times [2024-11-08 17:37:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950048819] [2024-11-08 17:37:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:28,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950048819] [2024-11-08 17:37:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950048819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683665609] [2024-11-08 17:37:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:28,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:28,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:28,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:28,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:37:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:28,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:37:28,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:28,867 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 23 treesize of output 7 [2024-11-08 17:37:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:28,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:28,945 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 25 treesize of output 9 [2024-11-08 17:37:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683665609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:29,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 17:37:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401377857] [2024-11-08 17:37:29,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:29,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:37:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:37:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:37:29,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-11-08 17:37:29,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 313 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 17:37:29,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:29,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-11-08 17:37:29,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:32,346 INFO L124 PetriNetUnfolderBase]: 12869/19529 cut-off events. [2024-11-08 17:37:32,347 INFO L125 PetriNetUnfolderBase]: For 11252/11386 co-relation queries the response was YES. [2024-11-08 17:37:32,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50916 conditions, 19529 events. 12869/19529 cut-off events. For 11252/11386 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 133459 event pairs, 7388 based on Foata normal form. 134/18074 useless extension candidates. Maximal degree in co-relation 50834. Up to 7597 conditions per place. [2024-11-08 17:37:32,583 INFO L140 encePairwiseOnDemand]: 51/65 looper letters, 140 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-11-08 17:37:32,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 182 transitions, 1037 flow [2024-11-08 17:37:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:37:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:37:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 311 transitions. [2024-11-08 17:37:32,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43496503496503497 [2024-11-08 17:37:32,587 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 313 flow. Second operand 11 states and 311 transitions. [2024-11-08 17:37:32,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 182 transitions, 1037 flow [2024-11-08 17:37:32,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 182 transitions, 1020 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:37:32,898 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 520 flow [2024-11-08 17:37:32,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=520, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-08 17:37:32,899 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-11-08 17:37:32,903 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 520 flow [2024-11-08 17:37:32,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 17:37:32,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:32,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:32,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:37:33,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:33,106 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 17:37:33,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -870991769, now seen corresponding path program 1 times [2024-11-08 17:37:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:33,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152099330] [2024-11-08 17:37:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152099330] [2024-11-08 17:37:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152099330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385923349] [2024-11-08 17:37:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:33,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:33,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:33,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:33,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:37:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:33,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:37:33,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:33,759 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 23 treesize of output 7 [2024-11-08 17:37:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:33,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:33,835 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 25 treesize of output 9 [2024-11-08 17:37:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385923349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:33,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 17:37:33,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454510869] [2024-11-08 17:37:33,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:33,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:37:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:37:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:37:34,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-11-08 17:37:34,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 520 flow. Second operand has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 17:37:34,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:34,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-11-08 17:37:34,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:37,535 INFO L124 PetriNetUnfolderBase]: 11964/18088 cut-off events. [2024-11-08 17:37:37,536 INFO L125 PetriNetUnfolderBase]: For 24340/24913 co-relation queries the response was YES. [2024-11-08 17:37:37,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51606 conditions, 18088 events. 11964/18088 cut-off events. For 24340/24913 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 121248 event pairs, 7043 based on Foata normal form. 573/17256 useless extension candidates. Maximal degree in co-relation 51493. Up to 7564 conditions per place. [2024-11-08 17:37:37,757 INFO L140 encePairwiseOnDemand]: 51/65 looper letters, 124 selfloop transitions, 29 changer transitions 0/167 dead transitions. [2024-11-08 17:37:37,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 167 transitions, 1149 flow [2024-11-08 17:37:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:37:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:37:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2024-11-08 17:37:37,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4167832167832168 [2024-11-08 17:37:37,760 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 520 flow. Second operand 11 states and 298 transitions. [2024-11-08 17:37:37,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 167 transitions, 1149 flow [2024-11-08 17:37:37,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1125 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-08 17:37:37,966 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 605 flow [2024-11-08 17:37:37,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=605, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2024-11-08 17:37:37,967 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-11-08 17:37:37,967 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 605 flow [2024-11-08 17:37:37,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.333333333333332) internal successors, (275), 15 states have internal predecessors, (275), 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 17:37:37,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:37,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2024-11-08 17:37:37,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:37:38,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:38,170 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 17:37:38,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1517023263, now seen corresponding path program 2 times [2024-11-08 17:37:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:38,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519278137] [2024-11-08 17:37:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:37:39,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519278137] [2024-11-08 17:37:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519278137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:39,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067110273] [2024-11-08 17:37:39,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:37:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:39,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:39,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:39,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:37:40,301 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:37:40,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:37:40,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:37:40,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:41,245 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 15 treesize of output 7 [2024-11-08 17:37:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:37:41,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:41,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:37:41,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 17 [2024-11-08 17:37:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:37:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067110273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:41,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 41 [2024-11-08 17:37:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182902440] [2024-11-08 17:37:41,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:41,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:37:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:37:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:37:43,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 65 [2024-11-08 17:37:43,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 605 flow. Second operand has 41 states, 41 states have (on average 10.658536585365853) internal successors, (437), 41 states have internal predecessors, (437), 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 17:37:43,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:43,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 65 [2024-11-08 17:37:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:38:13,236 INFO L124 PetriNetUnfolderBase]: 96676/133385 cut-off events. [2024-11-08 17:38:13,236 INFO L125 PetriNetUnfolderBase]: For 145331/145331 co-relation queries the response was YES. [2024-11-08 17:38:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401251 conditions, 133385 events. 96676/133385 cut-off events. For 145331/145331 co-relation queries the response was YES. Maximal size of possible extension queue 3995. Compared 950902 event pairs, 17722 based on Foata normal form. 0/122821 useless extension candidates. Maximal degree in co-relation 263755. Up to 26426 conditions per place. [2024-11-08 17:38:14,403 INFO L140 encePairwiseOnDemand]: 39/65 looper letters, 1408 selfloop transitions, 267 changer transitions 0/1680 dead transitions. [2024-11-08 17:38:14,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1680 transitions, 10274 flow [2024-11-08 17:38:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 17:38:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-11-08 17:38:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2092 transitions. [2024-11-08 17:38:14,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.397340930674264 [2024-11-08 17:38:14,421 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 605 flow. Second operand 81 states and 2092 transitions. [2024-11-08 17:38:14,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1680 transitions, 10274 flow [2024-11-08 17:38:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1680 transitions, 9772 flow, removed 217 selfloop flow, removed 7 redundant places. [2024-11-08 17:38:25,062 INFO L231 Difference]: Finished difference. Result has 249 places, 412 transitions, 3564 flow [2024-11-08 17:38:25,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=3564, PETRI_PLACES=249, PETRI_TRANSITIONS=412} [2024-11-08 17:38:25,064 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 194 predicate places. [2024-11-08 17:38:25,064 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 412 transitions, 3564 flow [2024-11-08 17:38:25,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.658536585365853) internal successors, (437), 41 states have internal predecessors, (437), 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 17:38:25,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:38:25,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2024-11-08 17:38:25,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:38:25,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:25,267 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 17:38:25,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:38:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1076878125, now seen corresponding path program 2 times [2024-11-08 17:38:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:38:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187869286] [2024-11-08 17:38:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:38:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:38:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:38:26,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:38:26,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187869286] [2024-11-08 17:38:26,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187869286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:38:26,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935528634] [2024-11-08 17:38:26,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:38:26,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:38:26,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:38:26,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a80e3d7-834d-42ea-907b-81de39b97b3a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:38:26,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:38:26,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:38:26,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 17:38:26,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:38:26,618 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 15 treesize of output 7 [2024-11-08 17:38:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:38:26,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:38:26,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:38:26,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 15 [2024-11-08 17:38:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:38:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935528634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:38:27,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:38:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2024-11-08 17:38:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059096505] [2024-11-08 17:38:27,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:38:27,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 17:38:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:38:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 17:38:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 17:38:27,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 65 [2024-11-08 17:38:27,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 412 transitions, 3564 flow. Second operand has 34 states, 34 states have (on average 12.441176470588236) internal successors, (423), 34 states have internal predecessors, (423), 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 17:38:27,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:38:27,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 65 [2024-11-08 17:38:27,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand