./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/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 b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:24:38,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:24:39,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:24:39,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:24:39,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:24:39,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:24:39,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:24:39,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:24:39,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:24:39,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:24:39,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:24:39,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:24:39,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:24:39,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:24:39,074 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:24:39,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:24:39,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:24:39,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:24:39,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:24:39,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:24:39,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:24:39,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:24:39,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:24:39,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:24:39,082 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:24:39,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:24:39,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:24:39,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:24:39,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:24:39,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:24:39,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:24:39,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:24:39,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:24:39,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:24:39,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:24:39,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:24:39,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:24:39,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:24:39,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:24:39,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:24:39,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:24:39,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:24:39,093 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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-08 19:24:39,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:24:39,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:24:39,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:24:39,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:24:39,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:24:39,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c Unable to find full path for "g++" [2024-11-08 19:24:41,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:24:42,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:24:42,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-08 19:24:42,213 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/data/c71e361ad/2c931ad5cfd140e0a6c293e9011d043f/FLAGb7015a24f [2024-11-08 19:24:42,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/data/c71e361ad/2c931ad5cfd140e0a6c293e9011d043f [2024-11-08 19:24:42,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:24:42,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:24:42,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:24:42,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:24:42,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:24:42,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:42,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2815acfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42, skipping insertion in model container [2024-11-08 19:24:42,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:42,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:24:42,726 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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-08 19:24:42,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:24:42,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:24:42,844 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_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-08 19:24:42,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:24:42,894 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:24:42,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42 WrapperNode [2024-11-08 19:24:42,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:24:42,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:24:42,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:24:42,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:24:42,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:42,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:42,988 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 290 [2024-11-08 19:24:42,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:24:42,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:24:42,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:24:42,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:24:43,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,064 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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 19:24:43,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:24:43,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:24:43,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:24:43,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:24:43,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (1/1) ... [2024-11-08 19:24:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:24:43,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:24:43,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:24:43,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:24:43,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:24:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:24:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:24:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:24:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:24:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:24:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:24:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:24:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:24:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 19:24:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 19:24:43,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 19:24:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 19:24:43,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:24:43,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:24:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 19:24:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 19:24:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:24:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:24:43,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:24:43,233 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 19:24:43,454 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:24:43,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:24:44,300 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:24:44,300 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:24:44,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:24:44,791 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 19:24:44,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:24:44 BoogieIcfgContainer [2024-11-08 19:24:44,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:24:44,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:24:44,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:24:44,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:24:44,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:24:42" (1/3) ... [2024-11-08 19:24:44,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e3b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:24:44, skipping insertion in model container [2024-11-08 19:24:44,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:24:42" (2/3) ... [2024-11-08 19:24:44,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e3b326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:24:44, skipping insertion in model container [2024-11-08 19:24:44,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:24:44" (3/3) ... [2024-11-08 19:24:44,804 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-08 19:24:44,829 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:24:44,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:24:44,829 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:24:44,926 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 19:24:44,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 142 flow [2024-11-08 19:24:45,050 INFO L124 PetriNetUnfolderBase]: 10/53 cut-off events. [2024-11-08 19:24:45,051 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:24:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 10/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-08 19:24:45,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 57 transitions, 142 flow [2024-11-08 19:24:45,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 52 transitions, 128 flow [2024-11-08 19:24:45,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:24:45,087 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;@72daef5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:24:45,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 19:24:45,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:24:45,131 INFO L124 PetriNetUnfolderBase]: 10/51 cut-off events. [2024-11-08 19:24:45,131 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:24:45,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:24:45,132 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 19:24:45,132 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 19:24:45,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 85157351, now seen corresponding path program 1 times [2024-11-08 19:24:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:45,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18718825] [2024-11-08 19:24:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:45,459 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 19:24:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18718825] [2024-11-08 19:24:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18718825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:24:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:24:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:24:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709868928] [2024-11-08 19:24:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:24:45,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:24:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:45,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:24:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:24:45,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-11-08 19:24:45,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:45,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:24:45,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-11-08 19:24:45,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:24:49,388 INFO L124 PetriNetUnfolderBase]: 19910/25916 cut-off events. [2024-11-08 19:24:49,388 INFO L125 PetriNetUnfolderBase]: For 1359/1359 co-relation queries the response was YES. [2024-11-08 19:24:49,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52967 conditions, 25916 events. 19910/25916 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 129524 event pairs, 16686 based on Foata normal form. 0/22651 useless extension candidates. Maximal degree in co-relation 49477. Up to 25846 conditions per place. [2024-11-08 19:24:49,629 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 40 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-11-08 19:24:49,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 200 flow [2024-11-08 19:24:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:24:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:24:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-08 19:24:49,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-11-08 19:24:49,651 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 128 flow. Second operand 2 states and 68 transitions. [2024-11-08 19:24:49,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 200 flow [2024-11-08 19:24:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 19:24:49,686 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 104 flow [2024-11-08 19:24:49,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-08 19:24:49,693 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-11-08 19:24:49,693 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 104 flow [2024-11-08 19:24:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:49,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:24:49,694 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] [2024-11-08 19:24:49,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:24:49,695 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 19:24:49,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 550413305, now seen corresponding path program 1 times [2024-11-08 19:24:49,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:49,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905660892] [2024-11-08 19:24:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:50,179 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 19:24:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905660892] [2024-11-08 19:24:50,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905660892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:24:50,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:24:50,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:24:50,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725072251] [2024-11-08 19:24:50,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:24:50,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:24:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:24:50,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:24:50,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-11-08 19:24:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:24:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:24:50,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-11-08 19:24:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:24:54,739 INFO L124 PetriNetUnfolderBase]: 31443/40867 cut-off events. [2024-11-08 19:24:54,739 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2024-11-08 19:24:54,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82329 conditions, 40867 events. 31443/40867 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 221267 event pairs, 9215 based on Foata normal form. 1/35467 useless extension candidates. Maximal degree in co-relation 82326. Up to 28277 conditions per place. [2024-11-08 19:24:54,963 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 69 selfloop transitions, 5 changer transitions 1/83 dead transitions. [2024-11-08 19:24:54,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 331 flow [2024-11-08 19:24:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:24:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:24:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-08 19:24:54,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2024-11-08 19:24:54,967 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 104 flow. Second operand 3 states and 112 transitions. [2024-11-08 19:24:54,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 331 flow [2024-11-08 19:24:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:24:54,972 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 137 flow [2024-11-08 19:24:54,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-08 19:24:54,974 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2024-11-08 19:24:54,974 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 137 flow [2024-11-08 19:24:54,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:24:54,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:24:54,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:24:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:24:54,975 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 19:24:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -870057727, now seen corresponding path program 1 times [2024-11-08 19:24:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973010199] [2024-11-08 19:24:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973010199] [2024-11-08 19:24:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973010199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:24:55,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:24:55,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:24:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339450224] [2024-11-08 19:24:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:24:55,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:24:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:24:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:24:55,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-08 19:24:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 19:24:55,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:24:55,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-08 19:24:55,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:25:01,216 INFO L124 PetriNetUnfolderBase]: 47786/62968 cut-off events. [2024-11-08 19:25:01,216 INFO L125 PetriNetUnfolderBase]: For 5325/5325 co-relation queries the response was YES. [2024-11-08 19:25:01,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136672 conditions, 62968 events. 47786/62968 cut-off events. For 5325/5325 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 363480 event pairs, 40360 based on Foata normal form. 2001/55889 useless extension candidates. Maximal degree in co-relation 136667. Up to 40411 conditions per place. [2024-11-08 19:25:01,580 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 45 selfloop transitions, 2 changer transitions 37/90 dead transitions. [2024-11-08 19:25:01,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 402 flow [2024-11-08 19:25:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:25:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:25:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-08 19:25:01,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45964912280701753 [2024-11-08 19:25:01,587 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 137 flow. Second operand 5 states and 131 transitions. [2024-11-08 19:25:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 402 flow [2024-11-08 19:25:01,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 90 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:25:01,600 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 154 flow [2024-11-08 19:25:01,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-08 19:25:01,602 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-11-08 19:25:01,603 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 154 flow [2024-11-08 19:25:01,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 19:25:01,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:25:01,604 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:01,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:25:01,605 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 19:25:01,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1551851139, now seen corresponding path program 1 times [2024-11-08 19:25:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:25:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458241255] [2024-11-08 19:25:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:25:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:01,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:25:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458241255] [2024-11-08 19:25:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458241255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:25:01,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750646786] [2024-11-08 19:25:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:01,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:01,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:01,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:01,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:25:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:02,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:25:02,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:02,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:02,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750646786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:02,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:25:02,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 19:25:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684351520] [2024-11-08 19:25:02,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:02,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 19:25:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:25:02,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 19:25:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:25:02,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 57 [2024-11-08 19:25:02,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 154 flow. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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 19:25:02,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:25:02,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 57 [2024-11-08 19:25:02,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:25:08,576 INFO L124 PetriNetUnfolderBase]: 47146/62037 cut-off events. [2024-11-08 19:25:08,576 INFO L125 PetriNetUnfolderBase]: For 6156/6156 co-relation queries the response was YES. [2024-11-08 19:25:08,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135892 conditions, 62037 events. 47146/62037 cut-off events. For 6156/6156 co-relation queries the response was YES. Maximal size of possible extension queue 2233. Compared 356858 event pairs, 39870 based on Foata normal form. 2026/55161 useless extension candidates. Maximal degree in co-relation 135884. Up to 40409 conditions per place. [2024-11-08 19:25:08,945 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 77 selfloop transitions, 11 changer transitions 2/95 dead transitions. [2024-11-08 19:25:08,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 456 flow [2024-11-08 19:25:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:25:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 19:25:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-11-08 19:25:08,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3255360623781676 [2024-11-08 19:25:08,948 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 154 flow. Second operand 9 states and 167 transitions. [2024-11-08 19:25:08,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 456 flow [2024-11-08 19:25:08,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 444 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-08 19:25:08,961 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 219 flow [2024-11-08 19:25:08,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=219, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-08 19:25:08,965 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-11-08 19:25:08,965 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 219 flow [2024-11-08 19:25:08,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 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 19:25:08,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:25:08,966 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:08,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:25:09,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:09,170 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 19:25:09,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1676334085, now seen corresponding path program 1 times [2024-11-08 19:25:09,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:25:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026945006] [2024-11-08 19:25:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:09,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:25:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:25:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026945006] [2024-11-08 19:25:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026945006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:25:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223015312] [2024-11-08 19:25:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:09,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:09,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:09,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:25:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:09,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:25:09,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:09,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223015312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:25:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 19:25:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594660908] [2024-11-08 19:25:09,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:09,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 19:25:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:25:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 19:25:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:25:09,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 57 [2024-11-08 19:25:09,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 219 flow. Second operand has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 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 19:25:09,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:25:09,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 57 [2024-11-08 19:25:09,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:25:13,888 INFO L124 PetriNetUnfolderBase]: 35528/46754 cut-off events. [2024-11-08 19:25:13,888 INFO L125 PetriNetUnfolderBase]: For 7618/7618 co-relation queries the response was YES. [2024-11-08 19:25:14,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104744 conditions, 46754 events. 35528/46754 cut-off events. For 7618/7618 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 257873 event pairs, 29704 based on Foata normal form. 611/40791 useless extension candidates. Maximal degree in co-relation 104735. Up to 40409 conditions per place. [2024-11-08 19:25:14,462 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 44 selfloop transitions, 6 changer transitions 33/88 dead transitions. [2024-11-08 19:25:14,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 447 flow [2024-11-08 19:25:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:25:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 19:25:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-11-08 19:25:14,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3157894736842105 [2024-11-08 19:25:14,464 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 219 flow. Second operand 9 states and 162 transitions. [2024-11-08 19:25:14,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 447 flow [2024-11-08 19:25:14,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 435 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-08 19:25:14,483 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 189 flow [2024-11-08 19:25:14,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2024-11-08 19:25:14,484 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-11-08 19:25:14,484 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 189 flow [2024-11-08 19:25:14,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 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 19:25:14,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:25:14,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:14,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:25:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:14,687 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 19:25:14,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -233835295, now seen corresponding path program 2 times [2024-11-08 19:25:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:25:14,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627918506] [2024-11-08 19:25:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:25:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:25:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:25:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627918506] [2024-11-08 19:25:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627918506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:25:14,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605567451] [2024-11-08 19:25:14,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:25:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:14,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:25:15,120 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:25:15,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:25:15,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:25:15,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:25:15,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:25:15,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605567451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:15,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:25:15,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-11-08 19:25:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655793569] [2024-11-08 19:25:15,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:15,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 19:25:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:25:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 19:25:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:25:15,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 57 [2024-11-08 19:25:15,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 189 flow. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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 19:25:15,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:25:15,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 57 [2024-11-08 19:25:15,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:25:26,313 INFO L124 PetriNetUnfolderBase]: 87383/113278 cut-off events. [2024-11-08 19:25:26,313 INFO L125 PetriNetUnfolderBase]: For 29619/29619 co-relation queries the response was YES. [2024-11-08 19:25:26,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263801 conditions, 113278 events. 87383/113278 cut-off events. For 29619/29619 co-relation queries the response was YES. Maximal size of possible extension queue 3434. Compared 659468 event pairs, 5452 based on Foata normal form. 3/98101 useless extension candidates. Maximal degree in co-relation 263790. Up to 29970 conditions per place. [2024-11-08 19:25:26,914 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 187 selfloop transitions, 21 changer transitions 4/217 dead transitions. [2024-11-08 19:25:26,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 217 transitions, 1079 flow [2024-11-08 19:25:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:25:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 19:25:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-11-08 19:25:26,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2024-11-08 19:25:26,917 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 189 flow. Second operand 11 states and 299 transitions. [2024-11-08 19:25:26,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 217 transitions, 1079 flow [2024-11-08 19:25:26,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 217 transitions, 1041 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-08 19:25:26,939 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 353 flow [2024-11-08 19:25:26,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=353, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-11-08 19:25:26,940 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-11-08 19:25:26,940 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 353 flow [2024-11-08 19:25:26,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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 19:25:26,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:25:26,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:26,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:25:27,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:27,143 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 19:25:27,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 33185159, now seen corresponding path program 1 times [2024-11-08 19:25:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:25:27,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009055587] [2024-11-08 19:25:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:27,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:25:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:25:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009055587] [2024-11-08 19:25:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009055587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:25:28,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976280460] [2024-11-08 19:25:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:28,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:29,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1789b45a-e2ad-4d1a-ad06-51ca23ec2c87/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:25:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:29,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 19:25:29,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:29,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:29,635 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 21 treesize of output 15 [2024-11-08 19:25:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:25:29,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:25:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976280460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:30,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:25:30,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 23 [2024-11-08 19:25:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137425465] [2024-11-08 19:25:30,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:30,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 19:25:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:25:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 19:25:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-11-08 19:25:30,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 57 [2024-11-08 19:25:30,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 353 flow. Second operand has 23 states, 23 states have (on average 14.0) internal successors, (322), 23 states have internal predecessors, (322), 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 19:25:30,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:25:30,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 57 [2024-11-08 19:25:30,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand