./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/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_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/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_85c16adb-d419-44e0-98d6-460e0693f8f7/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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:13:53,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:13:53,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:13:53,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:13:53,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:13:54,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:13:54,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:13:54,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:13:54,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:13:54,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:13:54,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:13:54,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:13:54,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:13:54,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:13:54,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:13:54,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:13:54,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:13:54,031 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:13:54,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:13:54,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:13:54,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:13:54,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:13:54,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:13:54,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:13:54,039 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:13:54,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:13:54,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:13:54,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:13:54,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:13:54,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:13:54,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:13:54,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:13:54,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:54,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:13:54,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:13:54,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:13:54,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:13:54,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:13:54,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:13:54,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:13:54,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:13:54,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:13:54,046 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_85c16adb-d419-44e0-98d6-460e0693f8f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2024-11-08 17:13:54,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:13:54,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:13:54,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:13:54,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:13:54,328 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:13:54,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c Unable to find full path for "g++" [2024-11-08 17:13:56,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:13:56,575 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:13:56,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-08 17:13:56,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/data/0de50fd36/2bfc89576741432f98456195dda5ccb1/FLAG68493620f [2024-11-08 17:13:56,955 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/data/0de50fd36/2bfc89576741432f98456195dda5ccb1 [2024-11-08 17:13:56,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:13:56,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:13:56,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:56,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:13:56,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:13:56,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:56" (1/1) ... [2024-11-08 17:13:56,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c99358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:56, skipping insertion in model container [2024-11-08 17:13:56,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:13:56" (1/1) ... [2024-11-08 17:13:57,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:13:57,221 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_85c16adb-d419-44e0-98d6-460e0693f8f7/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2024-11-08 17:13:57,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:57,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:13:57,263 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_85c16adb-d419-44e0-98d6-460e0693f8f7/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2435,2448] [2024-11-08 17:13:57,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:13:57,285 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:13:57,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57 WrapperNode [2024-11-08 17:13:57,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:13:57,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:57,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:13:57,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:13:57,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,328 INFO L138 Inliner]: procedures = 24, calls = 19, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-08 17:13:57,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:13:57,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:13:57,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:13:57,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:13:57,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,363 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:13:57,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:13:57,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:13:57,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:13:57,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:13:57,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (1/1) ... [2024-11-08 17:13:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:13:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:13:57,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:13:57,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:13:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:13:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:13:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:13:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:13:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:13:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:13:57,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:13:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:13:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:13:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:13:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:13:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:13:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:13:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:13:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:13:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:13:57,450 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 17:13:57,553 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:13:57,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:13:57,868 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:13:57,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:13:58,124 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:13:58,125 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:13:58,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:58 BoogieIcfgContainer [2024-11-08 17:13:58,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:13:58,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:13:58,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:13:58,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:13:58,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:13:56" (1/3) ... [2024-11-08 17:13:58,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11399040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:58, skipping insertion in model container [2024-11-08 17:13:58,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:13:57" (2/3) ... [2024-11-08 17:13:58,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11399040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:13:58, skipping insertion in model container [2024-11-08 17:13:58,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:13:58" (3/3) ... [2024-11-08 17:13:58,137 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2024-11-08 17:13:58,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:13:58,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:13:58,158 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:13:58,230 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:13:58,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:13:58,332 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2024-11-08 17:13:58,332 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:13:58,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 8/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-08 17:13:58,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 39 transitions, 99 flow [2024-11-08 17:13:58,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 88 flow [2024-11-08 17:13:58,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:13:58,359 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;@2319b6db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:13:58,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:13:58,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:13:58,375 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2024-11-08 17:13:58,376 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:13:58,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:13:58,377 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] [2024-11-08 17:13:58,378 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 17:13:58,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash 305346537, now seen corresponding path program 1 times [2024-11-08 17:13:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596919639] [2024-11-08 17:13:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,373 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 17:13:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:59,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596919639] [2024-11-08 17:13:59,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596919639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:59,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:13:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153568697] [2024-11-08 17:13:59,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:59,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:13:59,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:13:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:13:59,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-08 17:13:59,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 17:13:59,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:13:59,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-08 17:13:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:13:59,708 INFO L124 PetriNetUnfolderBase]: 450/756 cut-off events. [2024-11-08 17:13:59,708 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 17:13:59,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 756 events. 450/756 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3353 event pairs, 124 based on Foata normal form. 1/686 useless extension candidates. Maximal degree in co-relation 1216. Up to 349 conditions per place. [2024-11-08 17:13:59,727 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 34 selfloop transitions, 4 changer transitions 1/52 dead transitions. [2024-11-08 17:13:59,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 215 flow [2024-11-08 17:13:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:13:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:13:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-08 17:13:59,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7521367521367521 [2024-11-08 17:13:59,742 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 88 transitions. [2024-11-08 17:13:59,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 215 flow [2024-11-08 17:13:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 193 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:13:59,750 INFO L231 Difference]: Finished difference. Result has 34 places, 38 transitions, 102 flow [2024-11-08 17:13:59,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=38} [2024-11-08 17:13:59,757 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2024-11-08 17:13:59,757 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 38 transitions, 102 flow [2024-11-08 17:13:59,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 17:13:59,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:13:59,758 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 17:13:59,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:13:59,758 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 17:13:59,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:13:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2060323896, now seen corresponding path program 1 times [2024-11-08 17:13:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:13:59,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643811580] [2024-11-08 17:13:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:13:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:13:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643811580] [2024-11-08 17:13:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643811580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:59,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:13:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246355237] [2024-11-08 17:13:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:59,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:13:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:13:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:13:59,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-08 17:13:59,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:00,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:00,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-08 17:14:00,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:00,369 INFO L124 PetriNetUnfolderBase]: 947/1587 cut-off events. [2024-11-08 17:14:00,369 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-08 17:14:00,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3304 conditions, 1587 events. 947/1587 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8441 event pairs, 491 based on Foata normal form. 46/1531 useless extension candidates. Maximal degree in co-relation 1273. Up to 763 conditions per place. [2024-11-08 17:14:00,384 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 58 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-11-08 17:14:00,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 75 transitions, 336 flow [2024-11-08 17:14:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:14:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-08 17:14:00,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2024-11-08 17:14:00,393 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 102 flow. Second operand 6 states and 137 transitions. [2024-11-08 17:14:00,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 75 transitions, 336 flow [2024-11-08 17:14:00,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:14:00,400 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 150 flow [2024-11-08 17:14:00,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-11-08 17:14:00,401 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-08 17:14:00,402 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 150 flow [2024-11-08 17:14:00,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:14:00,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:00,404 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 17:14:00,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:14:00,404 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 17:14:00,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 850071420, now seen corresponding path program 1 times [2024-11-08 17:14:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929676120] [2024-11-08 17:14:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929676120] [2024-11-08 17:14:00,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929676120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:00,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312800019] [2024-11-08 17:14:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:00,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:00,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-08 17:14:00,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 17:14:00,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:00,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-08 17:14:00,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:01,081 INFO L124 PetriNetUnfolderBase]: 864/1428 cut-off events. [2024-11-08 17:14:01,081 INFO L125 PetriNetUnfolderBase]: For 588/650 co-relation queries the response was YES. [2024-11-08 17:14:01,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 1428 events. 864/1428 cut-off events. For 588/650 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7261 event pairs, 444 based on Foata normal form. 41/1388 useless extension candidates. Maximal degree in co-relation 2095. Up to 785 conditions per place. [2024-11-08 17:14:01,095 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 53 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-08 17:14:01,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 348 flow [2024-11-08 17:14:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:14:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:14:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-08 17:14:01,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2024-11-08 17:14:01,099 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 150 flow. Second operand 6 states and 134 transitions. [2024-11-08 17:14:01,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 348 flow [2024-11-08 17:14:01,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:14:01,103 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 177 flow [2024-11-08 17:14:01,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-08 17:14:01,104 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-08 17:14:01,105 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 177 flow [2024-11-08 17:14:01,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 17:14:01,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:01,105 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 17:14:01,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:14:01,106 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 17:14:01,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:01,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1470305650, now seen corresponding path program 1 times [2024-11-08 17:14:01,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522445887] [2024-11-08 17:14:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:01,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522445887] [2024-11-08 17:14:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522445887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:14:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:14:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:14:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970242121] [2024-11-08 17:14:01,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:01,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:14:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:14:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:14:01,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-08 17:14:01,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:14:01,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:01,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-08 17:14:01,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:01,641 INFO L124 PetriNetUnfolderBase]: 814/1228 cut-off events. [2024-11-08 17:14:01,641 INFO L125 PetriNetUnfolderBase]: For 902/1042 co-relation queries the response was YES. [2024-11-08 17:14:01,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1228 events. 814/1228 cut-off events. For 902/1042 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5417 event pairs, 411 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 2392. Up to 717 conditions per place. [2024-11-08 17:14:01,650 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 37 selfloop transitions, 5 changer transitions 26/76 dead transitions. [2024-11-08 17:14:01,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 415 flow [2024-11-08 17:14:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:14:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:14:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-11-08 17:14:01,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-11-08 17:14:01,652 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 177 flow. Second operand 7 states and 141 transitions. [2024-11-08 17:14:01,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 415 flow [2024-11-08 17:14:01,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 406 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:14:01,656 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 138 flow [2024-11-08 17:14:01,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-08 17:14:01,657 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-11-08 17:14:01,658 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 138 flow [2024-11-08 17:14:01,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:14:01,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:01,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:01,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:14:01,658 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 17:14:01,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1792706726, now seen corresponding path program 1 times [2024-11-08 17:14:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663386873] [2024-11-08 17:14:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:01,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:01,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663386873] [2024-11-08 17:14:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663386873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377508503] [2024-11-08 17:14:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:01,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:01,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:01,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:14:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:01,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:14:01,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:02,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377508503] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-08 17:14:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950043667] [2024-11-08 17:14:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:02,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:14:02,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:14:02,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:02,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:02,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:14:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:02,927 INFO L124 PetriNetUnfolderBase]: 1512/2138 cut-off events. [2024-11-08 17:14:02,927 INFO L125 PetriNetUnfolderBase]: For 1120/1294 co-relation queries the response was YES. [2024-11-08 17:14:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 2138 events. 1512/2138 cut-off events. For 1120/1294 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9486 event pairs, 323 based on Foata normal form. 127/2260 useless extension candidates. Maximal degree in co-relation 5780. Up to 743 conditions per place. [2024-11-08 17:14:02,946 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 97 selfloop transitions, 28 changer transitions 0/129 dead transitions. [2024-11-08 17:14:02,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 129 transitions, 700 flow [2024-11-08 17:14:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:14:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 17:14:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-11-08 17:14:02,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44988344988344986 [2024-11-08 17:14:02,951 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 138 flow. Second operand 11 states and 193 transitions. [2024-11-08 17:14:02,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 129 transitions, 700 flow [2024-11-08 17:14:02,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 129 transitions, 604 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-11-08 17:14:02,979 INFO L231 Difference]: Finished difference. Result has 52 places, 62 transitions, 302 flow [2024-11-08 17:14:02,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=302, PETRI_PLACES=52, PETRI_TRANSITIONS=62} [2024-11-08 17:14:02,981 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-08 17:14:02,984 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 62 transitions, 302 flow [2024-11-08 17:14:02,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:02,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:02,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:03,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:03,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:03,186 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 17:14:03,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:03,186 INFO L85 PathProgramCache]: Analyzing trace with hash -299337246, now seen corresponding path program 2 times [2024-11-08 17:14:03,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:03,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202587083] [2024-11-08 17:14:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:03,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:03,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:03,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202587083] [2024-11-08 17:14:03,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202587083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:03,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847483213] [2024-11-08 17:14:03,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:14:03,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:03,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:03,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:03,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:14:03,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:14:03,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:03,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:14:03,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:03,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847483213] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-08 17:14:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192011240] [2024-11-08 17:14:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:03,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:14:03,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:14:03,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:14:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:04,276 INFO L124 PetriNetUnfolderBase]: 1829/2650 cut-off events. [2024-11-08 17:14:04,276 INFO L125 PetriNetUnfolderBase]: For 2550/2550 co-relation queries the response was YES. [2024-11-08 17:14:04,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 2650 events. 1829/2650 cut-off events. For 2550/2550 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12529 event pairs, 430 based on Foata normal form. 179/2820 useless extension candidates. Maximal degree in co-relation 7782. Up to 921 conditions per place. [2024-11-08 17:14:04,298 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 88 selfloop transitions, 40 changer transitions 0/132 dead transitions. [2024-11-08 17:14:04,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 845 flow [2024-11-08 17:14:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:14:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:14:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-11-08 17:14:04,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-11-08 17:14:04,300 INFO L175 Difference]: Start difference. First operand has 52 places, 62 transitions, 302 flow. Second operand 9 states and 150 transitions. [2024-11-08 17:14:04,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 845 flow [2024-11-08 17:14:04,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 132 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:14:04,319 INFO L231 Difference]: Finished difference. Result has 65 places, 81 transitions, 589 flow [2024-11-08 17:14:04,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=589, PETRI_PLACES=65, PETRI_TRANSITIONS=81} [2024-11-08 17:14:04,321 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2024-11-08 17:14:04,322 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 81 transitions, 589 flow [2024-11-08 17:14:04,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:04,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:04,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:04,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:04,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:14:04,527 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 17:14:04,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2130565188, now seen corresponding path program 3 times [2024-11-08 17:14:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:04,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546905098] [2024-11-08 17:14:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546905098] [2024-11-08 17:14:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546905098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647533730] [2024-11-08 17:14:04,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:14:04,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:04,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:04,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:04,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:14:04,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:14:04,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:04,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:14:04,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:04,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647533730] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-08 17:14:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028050724] [2024-11-08 17:14:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:05,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:14:05,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:14:05,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 81 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:05,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:05,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:14:05,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:05,818 INFO L124 PetriNetUnfolderBase]: 2235/3226 cut-off events. [2024-11-08 17:14:05,818 INFO L125 PetriNetUnfolderBase]: For 6719/6719 co-relation queries the response was YES. [2024-11-08 17:14:05,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11874 conditions, 3226 events. 2235/3226 cut-off events. For 6719/6719 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15700 event pairs, 592 based on Foata normal form. 26/3243 useless extension candidates. Maximal degree in co-relation 11836. Up to 1405 conditions per place. [2024-11-08 17:14:05,853 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 86 selfloop transitions, 69 changer transitions 0/159 dead transitions. [2024-11-08 17:14:05,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 159 transitions, 1336 flow [2024-11-08 17:14:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:14:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:14:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-11-08 17:14:05,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-08 17:14:05,855 INFO L175 Difference]: Start difference. First operand has 65 places, 81 transitions, 589 flow. Second operand 9 states and 162 transitions. [2024-11-08 17:14:05,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 159 transitions, 1336 flow [2024-11-08 17:14:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 159 transitions, 1297 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-08 17:14:05,943 INFO L231 Difference]: Finished difference. Result has 77 places, 112 transitions, 1099 flow [2024-11-08 17:14:05,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1099, PETRI_PLACES=77, PETRI_TRANSITIONS=112} [2024-11-08 17:14:05,947 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-11-08 17:14:05,947 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 112 transitions, 1099 flow [2024-11-08 17:14:05,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:05,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:05,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:05,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:14:06,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:14:06,149 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 17:14:06,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 144117054, now seen corresponding path program 4 times [2024-11-08 17:14:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991454311] [2024-11-08 17:14:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991454311] [2024-11-08 17:14:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991454311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782209770] [2024-11-08 17:14:06,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:14:06,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:06,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:06,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:06,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:14:06,407 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:14:06,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:06,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:14:06,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:06,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:06,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782209770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:06,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:06,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-08 17:14:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717523182] [2024-11-08 17:14:06,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:06,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:14:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:14:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:14:06,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-11-08 17:14:06,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 112 transitions, 1099 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 17:14:06,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:06,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-11-08 17:14:06,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:08,693 INFO L124 PetriNetUnfolderBase]: 4601/6425 cut-off events. [2024-11-08 17:14:08,693 INFO L125 PetriNetUnfolderBase]: For 22403/22403 co-relation queries the response was YES. [2024-11-08 17:14:08,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28121 conditions, 6425 events. 4601/6425 cut-off events. For 22403/22403 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 31080 event pairs, 383 based on Foata normal form. 42/6122 useless extension candidates. Maximal degree in co-relation 28076. Up to 1790 conditions per place. [2024-11-08 17:14:08,771 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 210 selfloop transitions, 221 changer transitions 0/432 dead transitions. [2024-11-08 17:14:08,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 432 transitions, 4743 flow [2024-11-08 17:14:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 17:14:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 17:14:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 328 transitions. [2024-11-08 17:14:08,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3504273504273504 [2024-11-08 17:14:08,775 INFO L175 Difference]: Start difference. First operand has 77 places, 112 transitions, 1099 flow. Second operand 24 states and 328 transitions. [2024-11-08 17:14:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 432 transitions, 4743 flow [2024-11-08 17:14:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 432 transitions, 4692 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-11-08 17:14:09,056 INFO L231 Difference]: Finished difference. Result has 112 places, 284 transitions, 3813 flow [2024-11-08 17:14:09,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3813, PETRI_PLACES=112, PETRI_TRANSITIONS=284} [2024-11-08 17:14:09,057 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 75 predicate places. [2024-11-08 17:14:09,057 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 284 transitions, 3813 flow [2024-11-08 17:14:09,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 17:14:09,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:09,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:09,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:14:09,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:14:09,263 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 17:14:09,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1516236440, now seen corresponding path program 5 times [2024-11-08 17:14:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615194237] [2024-11-08 17:14:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615194237] [2024-11-08 17:14:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615194237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242725935] [2024-11-08 17:14:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:14:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:09,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:09,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:14:09,550 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:14:09,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:09,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:14:09,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:09,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242725935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:09,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 17:14:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119704768] [2024-11-08 17:14:09,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:09,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:14:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:14:09,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:14:09,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-11-08 17:14:09,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 284 transitions, 3813 flow. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 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 17:14:09,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:09,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-11-08 17:14:09,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:12,106 INFO L124 PetriNetUnfolderBase]: 5068/7087 cut-off events. [2024-11-08 17:14:12,106 INFO L125 PetriNetUnfolderBase]: For 40481/40481 co-relation queries the response was YES. [2024-11-08 17:14:12,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37733 conditions, 7087 events. 5068/7087 cut-off events. For 40481/40481 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 34580 event pairs, 461 based on Foata normal form. 40/6746 useless extension candidates. Maximal degree in co-relation 37673. Up to 1792 conditions per place. [2024-11-08 17:14:12,185 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 235 selfloop transitions, 295 changer transitions 0/531 dead transitions. [2024-11-08 17:14:12,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 531 transitions, 7087 flow [2024-11-08 17:14:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 17:14:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 17:14:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 318 transitions. [2024-11-08 17:14:12,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-11-08 17:14:12,188 INFO L175 Difference]: Start difference. First operand has 112 places, 284 transitions, 3813 flow. Second operand 22 states and 318 transitions. [2024-11-08 17:14:12,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 531 transitions, 7087 flow [2024-11-08 17:14:12,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 531 transitions, 6964 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-08 17:14:12,706 INFO L231 Difference]: Finished difference. Result has 145 places, 418 transitions, 6568 flow [2024-11-08 17:14:12,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6568, PETRI_PLACES=145, PETRI_TRANSITIONS=418} [2024-11-08 17:14:12,707 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 108 predicate places. [2024-11-08 17:14:12,707 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 418 transitions, 6568 flow [2024-11-08 17:14:12,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 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 17:14:12,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:12,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:12,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:14:12,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 17:14:12,909 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 17:14:12,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1445577410, now seen corresponding path program 6 times [2024-11-08 17:14:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:12,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088795918] [2024-11-08 17:14:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088795918] [2024-11-08 17:14:13,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088795918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:13,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21859327] [2024-11-08 17:14:13,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:14:13,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:13,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:13,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:13,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:14:13,165 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-08 17:14:13,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:13,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:14:13,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:13,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21859327] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-08 17:14:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327960127] [2024-11-08 17:14:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:13,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:14:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:14:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:14:13,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:14:13,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 418 transitions, 6568 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:13,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:13,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:14:13,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:14,757 INFO L124 PetriNetUnfolderBase]: 2803/4080 cut-off events. [2024-11-08 17:14:14,757 INFO L125 PetriNetUnfolderBase]: For 38531/38531 co-relation queries the response was YES. [2024-11-08 17:14:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26521 conditions, 4080 events. 2803/4080 cut-off events. For 38531/38531 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 20923 event pairs, 394 based on Foata normal form. 24/4062 useless extension candidates. Maximal degree in co-relation 26446. Up to 1387 conditions per place. [2024-11-08 17:14:14,813 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 181 selfloop transitions, 273 changer transitions 0/458 dead transitions. [2024-11-08 17:14:14,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 458 transitions, 7770 flow [2024-11-08 17:14:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:14:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:14:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-08 17:14:14,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-11-08 17:14:14,814 INFO L175 Difference]: Start difference. First operand has 145 places, 418 transitions, 6568 flow. Second operand 8 states and 138 transitions. [2024-11-08 17:14:14,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 458 transitions, 7770 flow [2024-11-08 17:14:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 458 transitions, 7587 flow, removed 89 selfloop flow, removed 3 redundant places. [2024-11-08 17:14:15,286 INFO L231 Difference]: Finished difference. Result has 153 places, 425 transitions, 7477 flow [2024-11-08 17:14:15,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6357, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7477, PETRI_PLACES=153, PETRI_TRANSITIONS=425} [2024-11-08 17:14:15,287 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 116 predicate places. [2024-11-08 17:14:15,287 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 425 transitions, 7477 flow [2024-11-08 17:14:15,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 17:14:15,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:15,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:15,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:15,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:15,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 17:14:15,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -320915726, now seen corresponding path program 1 times [2024-11-08 17:14:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:15,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926652543] [2024-11-08 17:14:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:15,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926652543] [2024-11-08 17:14:15,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926652543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761702439] [2024-11-08 17:14:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:15,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:15,583 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:15,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:14:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:15,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:14:15,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:15,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761702439] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:15,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:15,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-08 17:14:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295768233] [2024-11-08 17:14:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:14:15,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:14:15,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:14:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:14:15,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-08 17:14:15,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 425 transitions, 7477 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 17:14:15,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:15,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-08 17:14:15,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:16,811 INFO L124 PetriNetUnfolderBase]: 2698/4110 cut-off events. [2024-11-08 17:14:16,812 INFO L125 PetriNetUnfolderBase]: For 68792/70040 co-relation queries the response was YES. [2024-11-08 17:14:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31176 conditions, 4110 events. 2698/4110 cut-off events. For 68792/70040 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 22799 event pairs, 496 based on Foata normal form. 464/4339 useless extension candidates. Maximal degree in co-relation 31097. Up to 2093 conditions per place. [2024-11-08 17:14:16,853 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 387 selfloop transitions, 40 changer transitions 0/522 dead transitions. [2024-11-08 17:14:16,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 522 transitions, 10218 flow [2024-11-08 17:14:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:14:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:14:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-08 17:14:16,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-11-08 17:14:16,854 INFO L175 Difference]: Start difference. First operand has 153 places, 425 transitions, 7477 flow. Second operand 5 states and 92 transitions. [2024-11-08 17:14:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 522 transitions, 10218 flow [2024-11-08 17:14:17,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 522 transitions, 10199 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-08 17:14:17,371 INFO L231 Difference]: Finished difference. Result has 157 places, 425 transitions, 7619 flow [2024-11-08 17:14:17,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7619, PETRI_PLACES=157, PETRI_TRANSITIONS=425} [2024-11-08 17:14:17,372 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 120 predicate places. [2024-11-08 17:14:17,372 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 425 transitions, 7619 flow [2024-11-08 17:14:17,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 17:14:17,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:17,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:17,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:14:17,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:17,573 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 17:14:17,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1900527915, now seen corresponding path program 1 times [2024-11-08 17:14:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264326416] [2024-11-08 17:14:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:17,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264326416] [2024-11-08 17:14:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264326416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734983790] [2024-11-08 17:14:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:18,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:18,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:14:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:18,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:14:18,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:18,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:14:19,076 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 17:14:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:19,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:19,874 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 38 treesize of output 34 [2024-11-08 17:14:19,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:14:19,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2024-11-08 17:14:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734983790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:25,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:25,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-08 17:14:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259885920] [2024-11-08 17:14:25,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:25,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:14:25,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:14:25,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:14:26,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-11-08 17:14:26,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 425 transitions, 7619 flow. Second operand has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:14:26,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:26,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-11-08 17:14:26,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:31,628 INFO L124 PetriNetUnfolderBase]: 7760/11630 cut-off events. [2024-11-08 17:14:31,628 INFO L125 PetriNetUnfolderBase]: For 190900/191978 co-relation queries the response was YES. [2024-11-08 17:14:31,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87787 conditions, 11630 events. 7760/11630 cut-off events. For 190900/191978 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 71054 event pairs, 251 based on Foata normal form. 481/12100 useless extension candidates. Maximal degree in co-relation 83528. Up to 4940 conditions per place. [2024-11-08 17:14:31,959 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 999 selfloop transitions, 803 changer transitions 9/1858 dead transitions. [2024-11-08 17:14:31,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 1858 transitions, 36322 flow [2024-11-08 17:14:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 17:14:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-08 17:14:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 550 transitions. [2024-11-08 17:14:31,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45492142266335817 [2024-11-08 17:14:31,963 INFO L175 Difference]: Start difference. First operand has 157 places, 425 transitions, 7619 flow. Second operand 31 states and 550 transitions. [2024-11-08 17:14:31,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 1858 transitions, 36322 flow [2024-11-08 17:14:34,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 1858 transitions, 36187 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:14:34,346 INFO L231 Difference]: Finished difference. Result has 199 places, 1206 transitions, 26317 flow [2024-11-08 17:14:34,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7578, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=26317, PETRI_PLACES=199, PETRI_TRANSITIONS=1206} [2024-11-08 17:14:34,347 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 162 predicate places. [2024-11-08 17:14:34,347 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 1206 transitions, 26317 flow [2024-11-08 17:14:34,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:14:34,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:34,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:34,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:14:34,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:34,548 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 17:14:34,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1121864263, now seen corresponding path program 2 times [2024-11-08 17:14:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087489474] [2024-11-08 17:14:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:34,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:35,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087489474] [2024-11-08 17:14:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087489474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380036811] [2024-11-08 17:14:35,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:14:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:35,114 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:35,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:14:35,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:14:35,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:35,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:14:35,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:35,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:14:35,776 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 17:14:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:35,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:36,423 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 38 treesize of output 34 [2024-11-08 17:14:36,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:14:36,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2024-11-08 17:14:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380036811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:39,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:39,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-08 17:14:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263614717] [2024-11-08 17:14:39,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:39,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:14:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:14:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:14:39,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-11-08 17:14:39,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1206 transitions, 26317 flow. Second operand has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:14:39,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:39,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-11-08 17:14:39,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:14:46,114 INFO L124 PetriNetUnfolderBase]: 9865/14774 cut-off events. [2024-11-08 17:14:46,114 INFO L125 PetriNetUnfolderBase]: For 284088/285201 co-relation queries the response was YES. [2024-11-08 17:14:46,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123102 conditions, 14774 events. 9865/14774 cut-off events. For 284088/285201 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 93481 event pairs, 1022 based on Foata normal form. 437/15203 useless extension candidates. Maximal degree in co-relation 121978. Up to 9430 conditions per place. [2024-11-08 17:14:46,290 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 1211 selfloop transitions, 783 changer transitions 6/2047 dead transitions. [2024-11-08 17:14:46,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2047 transitions, 46499 flow [2024-11-08 17:14:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:14:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 17:14:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 426 transitions. [2024-11-08 17:14:46,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4369230769230769 [2024-11-08 17:14:46,293 INFO L175 Difference]: Start difference. First operand has 199 places, 1206 transitions, 26317 flow. Second operand 25 states and 426 transitions. [2024-11-08 17:14:46,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 2047 transitions, 46499 flow [2024-11-08 17:14:51,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 2047 transitions, 45312 flow, removed 480 selfloop flow, removed 2 redundant places. [2024-11-08 17:14:51,370 INFO L231 Difference]: Finished difference. Result has 232 places, 1644 transitions, 37826 flow [2024-11-08 17:14:51,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25436, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=37826, PETRI_PLACES=232, PETRI_TRANSITIONS=1644} [2024-11-08 17:14:51,372 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 195 predicate places. [2024-11-08 17:14:51,372 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 1644 transitions, 37826 flow [2024-11-08 17:14:51,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:14:51,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:14:51,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:51,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:14:51,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:51,577 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 17:14:51,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1170584743, now seen corresponding path program 3 times [2024-11-08 17:14:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889400643] [2024-11-08 17:14:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:52,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889400643] [2024-11-08 17:14:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889400643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352061511] [2024-11-08 17:14:52,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:14:52,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:52,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:52,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:52,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:14:52,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:14:52,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:14:52,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:14:52,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:52,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:14:52,819 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 17:14:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:52,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:14:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352061511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:14:53,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:14:53,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 26 [2024-11-08 17:14:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589807372] [2024-11-08 17:14:53,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:53,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:14:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:14:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:14:54,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-08 17:14:54,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1644 transitions, 37826 flow. Second operand has 27 states, 27 states have (on average 9.88888888888889) internal successors, (267), 27 states have internal predecessors, (267), 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 17:14:54,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:14:54,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-08 17:14:54,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:07,066 INFO L124 PetriNetUnfolderBase]: 14470/21427 cut-off events. [2024-11-08 17:15:07,066 INFO L125 PetriNetUnfolderBase]: For 433046/434421 co-relation queries the response was YES. [2024-11-08 17:15:07,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187762 conditions, 21427 events. 14470/21427 cut-off events. For 433046/434421 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 138660 event pairs, 993 based on Foata normal form. 353/21662 useless extension candidates. Maximal degree in co-relation 186260. Up to 13433 conditions per place. [2024-11-08 17:15:07,359 INFO L140 encePairwiseOnDemand]: 22/39 looper letters, 1649 selfloop transitions, 1172 changer transitions 16/2901 dead transitions. [2024-11-08 17:15:07,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 2901 transitions, 67926 flow [2024-11-08 17:15:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 17:15:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-08 17:15:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 640 transitions. [2024-11-08 17:15:07,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38163387000596305 [2024-11-08 17:15:07,362 INFO L175 Difference]: Start difference. First operand has 232 places, 1644 transitions, 37826 flow. Second operand 43 states and 640 transitions. [2024-11-08 17:15:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 2901 transitions, 67926 flow [2024-11-08 17:15:17,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 2901 transitions, 67378 flow, removed 203 selfloop flow, removed 7 redundant places. [2024-11-08 17:15:17,179 INFO L231 Difference]: Finished difference. Result has 292 places, 2403 transitions, 59988 flow [2024-11-08 17:15:17,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=37358, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=59988, PETRI_PLACES=292, PETRI_TRANSITIONS=2403} [2024-11-08 17:15:17,181 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 255 predicate places. [2024-11-08 17:15:17,181 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 2403 transitions, 59988 flow [2024-11-08 17:15:17,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.88888888888889) internal successors, (267), 27 states have internal predecessors, (267), 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 17:15:17,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:17,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:17,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:15:17,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:17,382 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 17:15:17,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1719727029, now seen corresponding path program 1 times [2024-11-08 17:15:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077800904] [2024-11-08 17:15:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077800904] [2024-11-08 17:15:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077800904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230305922] [2024-11-08 17:15:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:18,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:18,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:18,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:18,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:15:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:18,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:15:18,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:18,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:15:18,361 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 17:15:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:18,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230305922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:18,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:18,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 17 [2024-11-08 17:15:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306046622] [2024-11-08 17:15:18,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:18,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:15:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:15:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:15:18,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-08 17:15:18,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 2403 transitions, 59988 flow. Second operand has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 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 17:15:18,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:18,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-08 17:15:18,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:15:31,415 INFO L124 PetriNetUnfolderBase]: 12139/19259 cut-off events. [2024-11-08 17:15:31,416 INFO L125 PetriNetUnfolderBase]: For 525837/527110 co-relation queries the response was YES. [2024-11-08 17:15:31,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191030 conditions, 19259 events. 12139/19259 cut-off events. For 525837/527110 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 144602 event pairs, 270 based on Foata normal form. 439/19535 useless extension candidates. Maximal degree in co-relation 189919. Up to 9049 conditions per place. [2024-11-08 17:15:31,876 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 1417 selfloop transitions, 1289 changer transitions 1/3064 dead transitions. [2024-11-08 17:15:31,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 3064 transitions, 80953 flow [2024-11-08 17:15:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:15:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:15:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-11-08 17:15:31,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-11-08 17:15:31,878 INFO L175 Difference]: Start difference. First operand has 292 places, 2403 transitions, 59988 flow. Second operand 9 states and 231 transitions. [2024-11-08 17:15:31,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 3064 transitions, 80953 flow [2024-11-08 17:15:45,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 3064 transitions, 80110 flow, removed 417 selfloop flow, removed 3 redundant places. [2024-11-08 17:15:45,102 INFO L231 Difference]: Finished difference. Result has 301 places, 2784 transitions, 74052 flow [2024-11-08 17:15:45,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=59349, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=963, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=74052, PETRI_PLACES=301, PETRI_TRANSITIONS=2784} [2024-11-08 17:15:45,105 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 264 predicate places. [2024-11-08 17:15:45,105 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 2784 transitions, 74052 flow [2024-11-08 17:15:45,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 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 17:15:45,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:15:45,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:45,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:15:45,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:15:45,310 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 17:15:45,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash 210081125, now seen corresponding path program 4 times [2024-11-08 17:15:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716833561] [2024-11-08 17:15:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:46,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716833561] [2024-11-08 17:15:46,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716833561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:46,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870185062] [2024-11-08 17:15:46,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:15:46,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:46,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:46,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:15:46,145 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:15:46,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:15:46,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:15:46,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:46,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:15:46,640 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 17:15:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:46,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:15:47,292 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 38 treesize of output 34 [2024-11-08 17:15:47,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:47,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2024-11-08 17:15:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:48,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870185062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:15:48,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:15:48,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-08 17:15:48,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306367895] [2024-11-08 17:15:48,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:15:48,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:15:48,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:15:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:15:48,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-11-08 17:15:48,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 2784 transitions, 74052 flow. Second operand has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:15:48,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:15:48,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-11-08 17:15:48,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:10,237 INFO L124 PetriNetUnfolderBase]: 18983/28364 cut-off events. [2024-11-08 17:16:10,238 INFO L125 PetriNetUnfolderBase]: For 809117/810765 co-relation queries the response was YES. [2024-11-08 17:16:10,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282942 conditions, 28364 events. 18983/28364 cut-off events. For 809117/810765 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 196804 event pairs, 1444 based on Foata normal form. 493/28607 useless extension candidates. Maximal degree in co-relation 281487. Up to 20303 conditions per place. [2024-11-08 17:16:10,738 INFO L140 encePairwiseOnDemand]: 23/39 looper letters, 2124 selfloop transitions, 1072 changer transitions 6/3332 dead transitions. [2024-11-08 17:16:10,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 3332 transitions, 92091 flow [2024-11-08 17:16:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:16:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 17:16:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 477 transitions. [2024-11-08 17:16:10,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217506631299735 [2024-11-08 17:16:10,741 INFO L175 Difference]: Start difference. First operand has 301 places, 2784 transitions, 74052 flow. Second operand 29 states and 477 transitions. [2024-11-08 17:16:10,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 3332 transitions, 92091 flow [2024-11-08 17:16:35,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 3332 transitions, 91849 flow, removed 118 selfloop flow, removed 2 redundant places. [2024-11-08 17:16:35,720 INFO L231 Difference]: Finished difference. Result has 329 places, 2985 transitions, 81458 flow [2024-11-08 17:16:35,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=73814, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=916, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=81458, PETRI_PLACES=329, PETRI_TRANSITIONS=2985} [2024-11-08 17:16:35,721 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 292 predicate places. [2024-11-08 17:16:35,722 INFO L471 AbstractCegarLoop]: Abstraction has has 329 places, 2985 transitions, 81458 flow [2024-11-08 17:16:35,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.689655172413794) internal successors, (310), 29 states have internal predecessors, (310), 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 17:16:35,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:35,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:35,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:35,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:16:35,923 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 17:16:35,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -992832585, now seen corresponding path program 2 times [2024-11-08 17:16:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635128975] [2024-11-08 17:16:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:35,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:36,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635128975] [2024-11-08 17:16:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635128975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195830534] [2024-11-08 17:16:36,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:16:36,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:36,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:36,519 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:36,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:16:36,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:16:36,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:36,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 17:16:36,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:36,844 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 17:16:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:36,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:37,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:16:37,026 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 28 treesize of output 21 [2024-11-08 17:16:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:37,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195830534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:37,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:37,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 17 [2024-11-08 17:16:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948125817] [2024-11-08 17:16:37,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:37,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:16:37,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:16:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:16:37,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-08 17:16:37,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 2985 transitions, 81458 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 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 17:16:37,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:37,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-08 17:16:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:55,865 INFO L124 PetriNetUnfolderBase]: 16270/25759 cut-off events. [2024-11-08 17:16:55,866 INFO L125 PetriNetUnfolderBase]: For 808807/811019 co-relation queries the response was YES. [2024-11-08 17:16:56,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272881 conditions, 25759 events. 16270/25759 cut-off events. For 808807/811019 co-relation queries the response was YES. Maximal size of possible extension queue 1936. Compared 201635 event pairs, 464 based on Foata normal form. 772/26181 useless extension candidates. Maximal degree in co-relation 271684. Up to 15720 conditions per place. [2024-11-08 17:16:56,537 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 2394 selfloop transitions, 1018 changer transitions 1/3774 dead transitions. [2024-11-08 17:16:56,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 3774 transitions, 109911 flow [2024-11-08 17:16:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:16:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:16:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-11-08 17:16:56,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-11-08 17:16:56,539 INFO L175 Difference]: Start difference. First operand has 329 places, 2985 transitions, 81458 flow. Second operand 9 states and 225 transitions. [2024-11-08 17:16:56,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 3774 transitions, 109911 flow [2024-11-08 17:17:17,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 3774 transitions, 108962 flow, removed 246 selfloop flow, removed 13 redundant places. [2024-11-08 17:17:17,248 INFO L231 Difference]: Finished difference. Result has 327 places, 3516 transitions, 100990 flow [2024-11-08 17:17:17,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=80571, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2060, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=100990, PETRI_PLACES=327, PETRI_TRANSITIONS=3516} [2024-11-08 17:17:17,250 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 290 predicate places. [2024-11-08 17:17:17,250 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 3516 transitions, 100990 flow [2024-11-08 17:17:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 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 17:17:17,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:17:17,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:17,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:17,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:17:17,451 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 17:17:17,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 336156789, now seen corresponding path program 3 times [2024-11-08 17:17:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:17:17,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113669574] [2024-11-08 17:17:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:17:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:17,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:17:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113669574] [2024-11-08 17:17:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113669574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:17:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073932315] [2024-11-08 17:17:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:17:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:17,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:17,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:17,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c16adb-d419-44e0-98d6-460e0693f8f7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:17:18,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:17:18,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:17:18,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 17:17:18,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:18,320 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 17:17:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:17:18,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:18,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:17:18,524 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 28 treesize of output 21 [2024-11-08 17:17:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:17:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073932315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:17:18,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:17:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 17 [2024-11-08 17:17:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216826433] [2024-11-08 17:17:18,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:17:18,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:17:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:17:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:17:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:17:19,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-08 17:17:19,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 3516 transitions, 100990 flow. Second operand has 18 states, 18 states have (on average 19.11111111111111) internal successors, (344), 18 states have internal predecessors, (344), 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 17:17:19,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:17:19,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-08 17:17:19,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand