./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/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_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/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_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:15:46,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:15:46,228 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:15:46,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:15:46,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:15:46,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:15:46,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:15:46,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:15:46,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:15:46,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:15:46,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:15:46,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:15:46,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:15:46,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:15:46,294 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:15:46,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:15:46,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:15:46,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:15:46,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:15:46,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:15:46,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:15:46,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:15:46,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:15:46,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:15:46,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:15:46,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:15:46,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:15:46,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:15:46,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:15:46,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:15:46,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:15:46,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:15:46,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:15:46,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:15:46,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:15:46,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:15:46,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:15:46,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:15:46,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:15:46,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:15:46,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:15:46,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:15:46,317 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_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-08 19:15:46,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:15:46,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:15:46,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:15:46,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:15:46,734 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:15:46,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c Unable to find full path for "g++" [2024-11-08 19:15:49,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:15:49,602 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:15:49,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-08 19:15:49,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/data/7bb6588e8/3113314a6536435e9bd4b640fbeb58cd/FLAG6c4a4e16d [2024-11-08 19:15:49,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/data/7bb6588e8/3113314a6536435e9bd4b640fbeb58cd [2024-11-08 19:15:49,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:15:49,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:15:49,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:49,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:15:49,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:15:49,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:49" (1/1) ... [2024-11-08 19:15:49,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37772a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:49, skipping insertion in model container [2024-11-08 19:15:49,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:49" (1/1) ... [2024-11-08 19:15:49,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:15:49,999 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_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-08 19:15:50,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:50,027 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:15:50,064 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_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-08 19:15:50,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:50,101 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:15:50,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50 WrapperNode [2024-11-08 19:15:50,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:50,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:50,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:15:50,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:15:50,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,174 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 290 [2024-11-08 19:15:50,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:50,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:15:50,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:15:50,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:15:50,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,216 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 19:15:50,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:15:50,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:15:50,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:15:50,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:15:50,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (1/1) ... [2024-11-08 19:15:50,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:15:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:50,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:15:50,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:15:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:15:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:15:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:15:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:15:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:15:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:15:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:15:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:15:50,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:15:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 19:15:50,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 19:15:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 19:15:50,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 19:15:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:15:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:15:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 19:15:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 19:15:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:15:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:15:50,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:15:50,366 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 19:15:50,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:15:50,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:15:51,361 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:15:51,361 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:15:51,814 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:15:51,814 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:15:51,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:51 BoogieIcfgContainer [2024-11-08 19:15:51,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:15:51,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:15:51,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:15:51,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:15:51,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:15:49" (1/3) ... [2024-11-08 19:15:51,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2159cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:51, skipping insertion in model container [2024-11-08 19:15:51,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:50" (2/3) ... [2024-11-08 19:15:51,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2159cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:51, skipping insertion in model container [2024-11-08 19:15:51,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:51" (3/3) ... [2024-11-08 19:15:51,826 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-08 19:15:51,850 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:15:51,851 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:15:51,851 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:15:51,967 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 19:15:52,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 164 flow [2024-11-08 19:15:52,149 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-08 19:15:52,150 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:15:52,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 64 events. 12/64 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-08 19:15:52,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 164 flow [2024-11-08 19:15:52,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 150 flow [2024-11-08 19:15:52,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:52,192 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;@d775303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:52,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 19:15:52,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:52,216 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2024-11-08 19:15:52,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:15:52,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:52,218 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, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:52,218 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 2 more)] === [2024-11-08 19:15:52,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1468229976, now seen corresponding path program 1 times [2024-11-08 19:15:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661809612] [2024-11-08 19:15:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:52,786 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 19:15:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661809612] [2024-11-08 19:15:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661809612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:52,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531870308] [2024-11-08 19:15:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:52,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:15:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:15:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:15:52,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 19:15:52,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 19:15:52,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:52,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 19:15:52,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:54,003 INFO L124 PetriNetUnfolderBase]: 2742/4733 cut-off events. [2024-11-08 19:15:54,003 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-08 19:15:54,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8002 conditions, 4733 events. 2742/4733 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31954 event pairs, 472 based on Foata normal form. 1/3797 useless extension candidates. Maximal degree in co-relation 7230. Up to 2067 conditions per place. [2024-11-08 19:15:54,118 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 41 selfloop transitions, 3 changer transitions 1/80 dead transitions. [2024-11-08 19:15:54,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 289 flow [2024-11-08 19:15:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:15:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:15:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-08 19:15:54,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7990196078431373 [2024-11-08 19:15:54,140 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 150 flow. Second operand 3 states and 163 transitions. [2024-11-08 19:15:54,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 289 flow [2024-11-08 19:15:54,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 263 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 19:15:54,162 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 153 flow [2024-11-08 19:15:54,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-11-08 19:15:54,171 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2024-11-08 19:15:54,172 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 153 flow [2024-11-08 19:15:54,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 19:15:54,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:54,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:54,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:15:54,175 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 2 more)] === [2024-11-08 19:15:54,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1558731620, now seen corresponding path program 1 times [2024-11-08 19:15:54,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175277225] [2024-11-08 19:15:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:54,526 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 19:15:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175277225] [2024-11-08 19:15:54,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175277225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:54,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:54,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606328012] [2024-11-08 19:15:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:54,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:15:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:15:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:15:54,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 19:15:54,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:54,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:54,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 19:15:54,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:55,523 INFO L124 PetriNetUnfolderBase]: 2961/4964 cut-off events. [2024-11-08 19:15:55,524 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-08 19:15:55,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 4964 events. 2961/4964 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33323 event pairs, 761 based on Foata normal form. 104/4185 useless extension candidates. Maximal degree in co-relation 3521. Up to 2321 conditions per place. [2024-11-08 19:15:55,589 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 50 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-11-08 19:15:55,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 315 flow [2024-11-08 19:15:55,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:15:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:15:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-08 19:15:55,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8186274509803921 [2024-11-08 19:15:55,592 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 153 flow. Second operand 3 states and 167 transitions. [2024-11-08 19:15:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 315 flow [2024-11-08 19:15:55,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:15:55,646 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 164 flow [2024-11-08 19:15:55,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-11-08 19:15:55,648 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-08 19:15:55,648 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 164 flow [2024-11-08 19:15:55,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:55,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:55,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:55,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:15:55,652 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 2 more)] === [2024-11-08 19:15:55,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash -379492034, now seen corresponding path program 1 times [2024-11-08 19:15:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:55,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405515920] [2024-11-08 19:15:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:55,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:55,914 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 19:15:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405515920] [2024-11-08 19:15:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405515920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:55,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250928010] [2024-11-08 19:15:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:55,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:15:55,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:15:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:15:55,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 19:15:55,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:55,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:55,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 19:15:55,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:57,002 INFO L124 PetriNetUnfolderBase]: 3326/5788 cut-off events. [2024-11-08 19:15:57,003 INFO L125 PetriNetUnfolderBase]: For 1541/1617 co-relation queries the response was YES. [2024-11-08 19:15:57,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 5788 events. 3326/5788 cut-off events. For 1541/1617 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 41043 event pairs, 955 based on Foata normal form. 91/4992 useless extension candidates. Maximal degree in co-relation 5083. Up to 2600 conditions per place. [2024-11-08 19:15:57,064 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 50 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-11-08 19:15:57,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 331 flow [2024-11-08 19:15:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:15:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:15:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-08 19:15:57,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2024-11-08 19:15:57,067 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 164 flow. Second operand 3 states and 165 transitions. [2024-11-08 19:15:57,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 331 flow [2024-11-08 19:15:57,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:15:57,070 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 176 flow [2024-11-08 19:15:57,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2024-11-08 19:15:57,071 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-11-08 19:15:57,071 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 176 flow [2024-11-08 19:15:57,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:57,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:57,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:57,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:15:57,072 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 2 more)] === [2024-11-08 19:15:57,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:57,073 INFO L85 PathProgramCache]: Analyzing trace with hash -900828073, now seen corresponding path program 1 times [2024-11-08 19:15:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308100557] [2024-11-08 19:15:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:57,361 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 19:15:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308100557] [2024-11-08 19:15:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308100557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:15:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155014095] [2024-11-08 19:15:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:57,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:15:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:15:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:15:57,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2024-11-08 19:15:57,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 19:15:57,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:57,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2024-11-08 19:15:57,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:58,869 INFO L124 PetriNetUnfolderBase]: 3976/7053 cut-off events. [2024-11-08 19:15:58,869 INFO L125 PetriNetUnfolderBase]: For 2396/2586 co-relation queries the response was YES. [2024-11-08 19:15:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14244 conditions, 7053 events. 3976/7053 cut-off events. For 2396/2586 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 52910 event pairs, 2675 based on Foata normal form. 106/5946 useless extension candidates. Maximal degree in co-relation 6894. Up to 4013 conditions per place. [2024-11-08 19:15:58,959 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 61 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-08 19:15:58,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 391 flow [2024-11-08 19:15:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:15:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:15:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-08 19:15:58,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-11-08 19:15:58,962 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 176 flow. Second operand 5 states and 236 transitions. [2024-11-08 19:15:58,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 391 flow [2024-11-08 19:15:58,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:15:58,968 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 210 flow [2024-11-08 19:15:58,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-08 19:15:58,972 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-08 19:15:58,973 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 210 flow [2024-11-08 19:15:58,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 19:15:58,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:58,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:58,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:15:58,974 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 2 more)] === [2024-11-08 19:15:58,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash 583531063, now seen corresponding path program 1 times [2024-11-08 19:15:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173048122] [2024-11-08 19:15:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:59,265 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 19:15:59,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173048122] [2024-11-08 19:15:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173048122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:15:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290340800] [2024-11-08 19:15:59,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:59,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:15:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:15:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:15:59,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2024-11-08 19:15:59,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 19:15:59,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:59,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2024-11-08 19:15:59,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:16:00,916 INFO L124 PetriNetUnfolderBase]: 4823/8811 cut-off events. [2024-11-08 19:16:00,917 INFO L125 PetriNetUnfolderBase]: For 2986/3240 co-relation queries the response was YES. [2024-11-08 19:16:01,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 8811 events. 4823/8811 cut-off events. For 2986/3240 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 69869 event pairs, 3295 based on Foata normal form. 146/7461 useless extension candidates. Maximal degree in co-relation 14794. Up to 4875 conditions per place. [2024-11-08 19:16:01,147 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 60 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-08 19:16:01,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 418 flow [2024-11-08 19:16:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:16:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:16:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-08 19:16:01,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-11-08 19:16:01,149 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 210 flow. Second operand 5 states and 232 transitions. [2024-11-08 19:16:01,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 418 flow [2024-11-08 19:16:01,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:16:01,154 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 247 flow [2024-11-08 19:16:01,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-08 19:16:01,155 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2024-11-08 19:16:01,155 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 247 flow [2024-11-08 19:16:01,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 19:16:01,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:16:01,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:16:01,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:16:01,157 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 2 more)] === [2024-11-08 19:16:01,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:16:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -773793927, now seen corresponding path program 1 times [2024-11-08 19:16:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:16:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413520963] [2024-11-08 19:16:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:16:01,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:16:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:16:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:16:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:16:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413520963] [2024-11-08 19:16:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413520963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:16:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549688496] [2024-11-08 19:16:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:16:01,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:16:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:16:01,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:16:01,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:16:02,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 19:16:02,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:16:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:16:02,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:16:02,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549688496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:16:02,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:16:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-08 19:16:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142082646] [2024-11-08 19:16:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:16:02,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:16:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:16:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:16:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:16:02,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2024-11-08 19:16:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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 19:16:02,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:16:02,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2024-11-08 19:16:02,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:16:07,494 INFO L124 PetriNetUnfolderBase]: 21617/32984 cut-off events. [2024-11-08 19:16:07,494 INFO L125 PetriNetUnfolderBase]: For 9891/9931 co-relation queries the response was YES. [2024-11-08 19:16:07,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71909 conditions, 32984 events. 21617/32984 cut-off events. For 9891/9931 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 249354 event pairs, 991 based on Foata normal form. 1196/32767 useless extension candidates. Maximal degree in co-relation 57640. Up to 12461 conditions per place. [2024-11-08 19:16:07,957 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 183 selfloop transitions, 19 changer transitions 2/235 dead transitions. [2024-11-08 19:16:07,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 235 transitions, 1102 flow [2024-11-08 19:16:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:16:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 19:16:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 536 transitions. [2024-11-08 19:16:07,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7165775401069518 [2024-11-08 19:16:07,961 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 247 flow. Second operand 11 states and 536 transitions. [2024-11-08 19:16:07,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 235 transitions, 1102 flow [2024-11-08 19:16:07,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 235 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:16:07,973 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 400 flow [2024-11-08 19:16:07,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-11-08 19:16:07,976 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 28 predicate places. [2024-11-08 19:16:07,978 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 400 flow [2024-11-08 19:16:07,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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 19:16:07,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:16:07,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:16:08,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:16:08,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4b9e20-c520-45d2-bcc5-59c2be7ded58/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 19:16:08,181 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 2 more)] === [2024-11-08 19:16:08,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:16:08,182 INFO L85 PathProgramCache]: Analyzing trace with hash 121608115, now seen corresponding path program 2 times [2024-11-08 19:16:08,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:16:08,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334113811] [2024-11-08 19:16:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:16:08,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:16:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:16:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:16:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:16:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334113811] [2024-11-08 19:16:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334113811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:16:08,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:16:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:16:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232523522] [2024-11-08 19:16:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:16:08,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:16:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:16:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:16:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:16:09,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2024-11-08 19:16:09,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 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 19:16:09,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:16:09,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2024-11-08 19:16:09,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:16:14,450 INFO L124 PetriNetUnfolderBase]: 22311/35142 cut-off events. [2024-11-08 19:16:14,450 INFO L125 PetriNetUnfolderBase]: For 36216/36326 co-relation queries the response was YES. [2024-11-08 19:16:14,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91418 conditions, 35142 events. 22311/35142 cut-off events. For 36216/36326 co-relation queries the response was YES. Maximal size of possible extension queue 1575. Compared 276331 event pairs, 4309 based on Foata normal form. 128/32926 useless extension candidates. Maximal degree in co-relation 72983. Up to 22713 conditions per place. [2024-11-08 19:16:14,950 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 103 selfloop transitions, 15 changer transitions 2/151 dead transitions. [2024-11-08 19:16:14,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 151 transitions, 813 flow [2024-11-08 19:16:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:16:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:16:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-08 19:16:14,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6985294117647058 [2024-11-08 19:16:14,954 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 400 flow. Second operand 6 states and 285 transitions. [2024-11-08 19:16:14,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 151 transitions, 813 flow [2024-11-08 19:16:15,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 811 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 19:16:15,450 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 490 flow [2024-11-08 19:16:15,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2024-11-08 19:16:15,451 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 36 predicate places. [2024-11-08 19:16:15,451 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 490 flow [2024-11-08 19:16:15,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 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 19:16:15,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:16:15,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:16:15,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:16:15,454 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 2 more)] === [2024-11-08 19:16:15,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:16:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 269672633, now seen corresponding path program 3 times [2024-11-08 19:16:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:16:15,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436525521] [2024-11-08 19:16:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:16:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:16:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:16:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:16:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:16:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436525521] [2024-11-08 19:16:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436525521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:16:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:16:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:16:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319710996] [2024-11-08 19:16:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:16:16,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:16:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:16:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:16:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:16:16,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 68 [2024-11-08 19:16:16,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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 19:16:16,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:16:16,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 68 [2024-11-08 19:16:16,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:16:27,663 INFO L124 PetriNetUnfolderBase]: 45621/69160 cut-off events. [2024-11-08 19:16:27,663 INFO L125 PetriNetUnfolderBase]: For 85032/85568 co-relation queries the response was YES. [2024-11-08 19:16:28,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180089 conditions, 69160 events. 45621/69160 cut-off events. For 85032/85568 co-relation queries the response was YES. Maximal size of possible extension queue 3506. Compared 572044 event pairs, 9133 based on Foata normal form. 1318/66334 useless extension candidates. Maximal degree in co-relation 147937. Up to 33609 conditions per place. [2024-11-08 19:16:28,371 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 136 selfloop transitions, 31 changer transitions 2/198 dead transitions. [2024-11-08 19:16:28,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1207 flow [2024-11-08 19:16:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:16:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 19:16:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 339 transitions. [2024-11-08 19:16:28,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7121848739495799 [2024-11-08 19:16:28,375 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 490 flow. Second operand 7 states and 339 transitions. [2024-11-08 19:16:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1207 flow [2024-11-08 19:16:30,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1173 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-08 19:16:30,192 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 729 flow [2024-11-08 19:16:30,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2024-11-08 19:16:30,194 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2024-11-08 19:16:30,194 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 729 flow [2024-11-08 19:16:30,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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 19:16:30,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:16:30,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:16:30,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:16:30,195 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 2 more)] === [2024-11-08 19:16:30,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:16:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1001050893, now seen corresponding path program 4 times [2024-11-08 19:16:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:16:30,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295980879] [2024-11-08 19:16:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:16:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:16:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:16:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:16:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:16:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295980879] [2024-11-08 19:16:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295980879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:16:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:16:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:16:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812376554] [2024-11-08 19:16:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:16:31,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:16:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:16:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:16:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:16:31,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 68 [2024-11-08 19:16:31,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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 19:16:31,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:16:31,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 68 [2024-11-08 19:16:31,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand